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36.25÷4.25x9.99

解: 36.25÷4.25x9.99 =36.25÷17/4x9.99 =36.25x4/17x9.99 =(36x4+0.25x4)x(10-0.01)÷17 =(144+1)x(10-0.01)÷17 =145x(10-0.01)÷17 =(145x10-145x0.01)÷17 =(1450-1.45)÷17 =1448.55÷17 =1700分之144855 =340分之28971 ≈85.208823...

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