(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算

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(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算
(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算

(455×5.45-0.45×2)÷(4.55+545×4.54)怎么算
(455×5.45-0.45×2)÷(4.55+545×4.54)
=(455×5.45-0.9)÷(4.55+5.45×454)
=(455×5.45-0.9)÷(4.55+5.45×455-5.45)
=(455×5.45-0.9)÷(455×5.45-0.9)
=1

(2478.85)/(2478.85)
=1

(2478.85)/(2478.85)
=1