一又五分之二 =7/5
二又十四分之五=33/14
四又五分之三 =23/5
原式=
[7/5 *33/14 -2.3/(23/5)]/0.36
=(231/70 -11.5/23)/0.36
=(3.3-0.5)/0.36
=2.8/0.36
=280/36
=140/18
=70/9