来自安维嵘的问题
用简便方法计算快（1.375×0.25+2.625×0.25）÷2537.2×48+372×5.1+37.24/7×11/21+3/7÷21/111/4×3.62+0.25×2.34+25%×4.049999×7778+3333×66662008×2006/2007
用简便方法计算快
（1.375×0.25+2.625×0.25）÷2537.2×48+372×5.1+37.2
4/7×11/21+3/7÷21/111/4×3.62+0.25×2.34+25%×4.04
9999×7778+3333×66662008×2006/2007
