799999 + 79999 + 7999 + 799 + 79 + 5 138 x 1又4分之1 + 23.3 x(2 - 百分之75)- 百分之125 x 38 + (1 + 0.25 )x 28.7

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799999+79999+7999+799+79+5138x1又4分之1+23.3x(2-百分之75)-百分之125x38+(1+0.25)x28.7799999+79999+7999+799+79+

799999 + 79999 + 7999 + 799 + 79 + 5 138 x 1又4分之1 + 23.3 x(2 - 百分之75)- 百分之125 x 38 + (1 + 0.25 )x 28.7
799999 + 79999 + 7999 + 799 + 79 + 5
138 x 1又4分之1 + 23.3 x(2 - 百分之75)- 百分之125 x 38 + (1 + 0.25 )x 28.7

799999 + 79999 + 7999 + 799 + 79 + 5 138 x 1又4分之1 + 23.3 x(2 - 百分之75)- 百分之125 x 38 + (1 + 0.25 )x 28.7
1.799999 + 79999 + 7999 + 799 + 79 + 5 =
800000-1+80000-1+8000-1+800-1+80-1+5 =
888880-5+5 = 888880
答案为888880
138 x 5/4 +23.3 x5/4 -5/4 x 38 +5/4 x28.7=
5/4 x (138+23.3-38+28.7) =
5/4 x 152 = 190
答案为190

799999 + 79999 + 7999 + 799 + 79 + 5
=(799999+1)+(79999+1)+(7999+1)+(799+1)+(79+1)
=800000+80000+8000+800+80
=888880
138 x 1又4分之1 + 23.3 x(2 - 百分之75)- 百分之125 x 38 + (1 + 0.25 )x 28.7
=138*1.25+23.3*1.25-38*1.25+28.7*1.25
=(138-38+23.3+28.7)*1.25
=152*1.25
=152*5/4=190