因为 [(3/4)--(7/9)+(1/4)]除以36 =[(3/4)--(7/9)+(1/4)]x(1/36) =[1--(7/9)]x(1/36) =(2/9)x(1/36) =1/162 所以 36除以(四分之三减九分之七加四分之一) =162.