12*21/35*15=12*(21/35*15)=12*9=108
21/35*15=21/35*15/1=63/7=9
72*11/33*30=72*(11/33*30)=72*10=720
11/33*30=11/33*30/1=110/11=10
25*17*44/51*8*75=(75*44/51)*17*25*8=(1100/17*17)*(25*8)=1100*200=220000
75*44/51=75/1*44/51=1100/17
1100/17*17/1=1100/1=1100
25*8=200
8*3+8*23/3+16=24+16+184/3=40+184/3=101 1/3
3*8=24
8*23/3=184/3
40+184/3=40/1+184/3=120/3+184/3=304/3=101 1/3
17*48/17*16-9*16=48*16-9*16=768-144=624
17*48/17=17/1*48/17=48/1=48
48*16=768
9*16=144
14*5-14*3/2189+21*3 =14*(5-3/2189)+21*3=14*10942/2189+63=153188/2189+63=
=132 2147/2189
5-3/2189=5/1-3/2189=10945/2189-3/2189=10942/2189
14*10942/2189=153188/2189
153188/2189+63=153188/2189+63/1=153188/2189+137907/2189=291095/2189=
=132 2147/2189