28.67x67十3.2×286.7+573.4×0.05 3÷(3x28.67x67十3.2×286.7+573.4×0.05 3÷(3x4)÷(4×5)÷(5x6)÷(6÷7)÷(7x8)÷(8x9)(简算)

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28.67x67十3.2×286.7+573.4×0.05 3÷(3x28.67x67十3.2×286.7+573.4×0.05 3÷(3x4)÷(4×5)÷(5x6)÷(6÷7)÷(7x8)÷(8x9)(简算)
28.67x67十3.2×286.7+573.4×0.05 3÷(3x
28.67x67十3.2×286.7+573.4×0.05 3÷(3x4)÷(4×5)÷(5x6)÷(6÷7)÷(7x8)÷(8x9)(简算)

28.67x67十3.2×286.7+573.4×0.05 3÷(3x28.67x67十3.2×286.7+573.4×0.05 3÷(3x4)÷(4×5)÷(5x6)÷(6÷7)÷(7x8)÷(8x9)(简算)
28.67x67十3.2×286.7+573.4×0.05
=286.7x6.7十3.2×286.7+286.7×0.1
=286.7×(6.7+3.2+0.1)
=286.7×10
=2867
3÷(3÷4)÷(4÷5)÷(5÷6)÷(6÷7)÷(7÷8)÷(8÷9) 题目有误,括号中间是÷吧
=3÷3×4÷4×5÷5×6÷6×7÷7×8÷8×9
=9