87×125×32×25
=87×(125×8)×(4×25)
=87×1000×100
=87000×100
=87000×100
=8700000
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87× 125 ×32 ×25
=87×125× 8× 4× 25
=87 ×(125 ×8)×( 4 ×25)
=87× 1000 ×100
=8700000
87x125x32x25
=87x125x4x8x25
=87x(125x8)x(25x4)烂者尘饥禅嫌吵
=87x1000x100
=8700000