(36分之1÷0.25 9分之1)÷6分之5簡算 (36分之1÷0.25+9分之1)÷6分之5 標題打錯了

原式=(1/36x4+1/9)x6/5
=(1/9+1/9)x6/5
=2/9x6/5
=4/15.