脱式计算(1)(28×74+12×175%)÷218(2)16×18+16×80+98×84(3)113-712+920-1130+1342-1556+1772-1990(4)49÷(56-12)×(78-12)(5)14×(4.85÷518-3.6+6.15×335)(6)10÷[83-(513÷526+-数学
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