①73.7-7.3-12.7
②15.7+0.58+0.42+2.3
③25×32×125
④36×68+64×68
⑤(425-373)×18÷39
⑥860÷[(170+260)÷10]
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×