一堆煤共180kg用了3又9分之4kg剩下多少千克？

剩下的煤的重量为： 180 kg - 3 3/4 kg = 180 kg - (3 + 9/4) kg = 180 kg - (12/4 + 9/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 21/4 kg = 180 kg - 5 1/4 kg = 180 kg - (5 + 1/4) kg = 180 kg - (20/4 + 1/4) kg = 180 kg - 2