85858585×99999999÷1010101÷11111111

问题描述:

85858585×99999999÷1010101÷11111111

=85x1010101x9x11111111/1010101/11111111=85x9x(1010101/1010101)x(11111111/11111111)=85x9=765

85858585×99999999÷1010101÷11111111
=85858585÷1010101×99999999÷11111111
=85×9
=85×(10-1)
=850-85
=765