125×3.2×2.5
6 ×0.125+ ×2 +12.5%
(2 +1 )÷(2 ﹣1 )
62.5+37.5÷7.5×2.4
36×( ﹣ + )
+ + +
×[1÷( ﹣ )]
× ÷ ﹣
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