代码优化: 使用BigDecimal计算分数并去除尾部零

代码优化: \n final BigDecimal levelSubtotalAssessScore = scoreItemValue.getExamineWeight()\n .multiply(NumberUtils.createBigDecimal(String.valueOf(scoreItemValue.getAssessScore())))\n .divide(BigDecimal.valueOf(size), 4, RoundingMode.HALF_UP)\n .stripTrailingZeros();