var d = 85196900 16 & 65535;

This code takes the decimal value 85196900, shifts its binary representation 16 bits to the right, and then performs a bitwise AND operation with the binary representation of 65535 (which is all ones in the lowest 16 bits and zeroes in the upper 16 bits). The result is the value of the 16-bit number that was shifted out of the original number, which in this case is 1298.