Question

6分之5乘（2除以8分之5减3）脱式计算, 7分之4乘4分之1除以7分之4乘4分之1脱式计算.

Answer 1

5/6*(2/5/8-3)

=5/6*(2*8/5-3)

=5/6*(16/5-15/5)

=5/6*1/5

=1/6