简便运算（78.6—0.786×25+75%×21.4）÷15×2001
问题描述：
简便运算（78.6—0.786×25+75%×21.4）÷15×2001
答
（78.6—0.786×25+75%×21.4）÷15×2001 =（78.6—78.6×0.25+75%×21.4）÷15×2001= （78.6×0.75+75%×21.4）÷15×2001 =（78.6+21.4）×0.75÷15×2001 =100×0.75÷15×2001=75÷15×2001=5×2001=10005...