(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8=急等

(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8=急等
(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8=
急等

(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8=急等
(7/18*4又1/2+1/6)/(13又1/3+3又1/3/5/16)/2又7/8
原式=（7/18×9/2+1/6）÷（40/3+10/3÷5/16）÷23/8
=（7/4+1/6）÷（40/3+32/3）÷23/8
=23/12÷24÷23/8
=23/288÷23/8
=23/288×8/23
=1/36