巧算 99999*99999+19999951*34+51*27+49*6125*(56+72)*125415*1321*73+415*869/73234*123+123*123+123*643

问题描述:

巧算 99999*99999+199999
51*34+51*27+49*61
25*(56+72)*125
415*1321*73+415*869/73
234*123+123*123+123*643