540÷(30×15÷50) 560+(83-38)×12 25×12+280÷35 = = = = = = = = = 120×15+567÷21 38×[300÷(42-22)] 75+240÷(120-105) = = = = = 432÷(28×16-394) = = = 732-(174×5-396) = = = 364÷[112÷(366-350)] = = = 500-[96÷(366-350)] = = = 56×57+57×144 = = = 312×12 = 209×18 = 287×63 = 145×44 = 360×32 = 270×43 = 240×23 = 170×86 = = = = = (93+87)÷(93-57) 768÷12×13 = = = = = = 560-912÷24×5 1500-[(76+28)×12] = = = = = = (870-548)÷14+175 120×5+276÷4 = = = = = = 336÷(12+750÷25) 240-40÷5×9 = = = = = = [196-(37+59)]×32 640+360÷60+40 = = = = = = 148÷40 153÷20 224÷56 = = = 480÷30 520÷30 739÷46 = = = 720÷40 638÷22 992÷32 = = = 368÷50 296÷37 756÷18 = = = 712÷80 638÷22 992÷32 = = = 840÷70 351÷39 914÷44 = = = 650÷77 184÷23 592÷16 = = = 427÷61 266÷38 364÷13 = = = 67×35 = 132×14 = 52×320 = 304×25 = 154×13 = 214×33 = 208×40 = 620×12 = 422×34 = 63÷20 = 88÷30 = 544÷59 = 492÷82 = 92÷23 = 324÷81 = 128÷32 = 345÷23 = 656÷41 = 864÷32 = 181÷57 = 324÷38 = 360÷50 = 413÷52 = 78÷18 = 243÷27 = 145÷29 = 224÷28 = 850÷17 = 343÷49 = 594÷18 = 624÷13 = 144÷24 = 272÷34 = 340÷17 = 795÷26 = 406÷41 = 181÷29 = 360÷35 = 548÷91 = 405÷81 = 196÷14 = 380÷20 = 720÷30 = 850÷70 = 本文来源：https://www.wddqw.com/doc/a8d40ef2d8ef5ef7ba0d4a7302768e9951e76ed9.html