?$=125×8+125×4$? ?$=1000+500$? ?$=1500$? ?$=125×8×4$? ?$=1000×4$? ?$=4000$? ?$=64×(99+1)$? ?$=64×100$? ?$=6400$? ?$=64×100-64$? ?$=6400-64$? ?$=6336$? ?$=85×(101-1)$? ?$=85×100$? ?$=8500$? ?$=85×100+85$? ?$=8500+85$? ?$=8585$? ?$=510÷(2×5)$? ?$=510÷10$? ?$=51$? ?$=540÷9÷5$? ?$=60÷5$? ?$=12$? ?$=270÷(45×2)$? ?$=270÷90$? ?$=3$? ?$=45×(102-2)$? ?$=45×100$? ?$=4500$? ?$=54×(176-76)$? ?$=54×100$? ?$=5400$?
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