[(10.75-12/59)*11/29]/[(1.125+12/1)/(2.25/11/120)]
=[(10.75-12/59)*11/29]/[24/29÷160/33]
=[(10.75-12/59)*11/29]÷99/580
=(10.75-4又12/11)*（11/29*580/99）
=6/35*20/9
=8/21