간편 연산(78.6-0.786×25+75%×21.4)÷15×2001

간편 연산(78.6-0.786×25+75%×21.4)÷15×2001

(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...