553.
95 19/34 - 37 1/2=95 19/34 - 37 17/34=95 19/34 - 37 - 17/34=58 2/34=58 1/17
47 163/210 - 39 32/105=47 163/210 - 39 64/210=8 99/210=8 33/70
301 367/540 - 277 31/60=301 367/540 - 277 279/540=24 88/540=24 22/135
109 22/25 - 101 83/250=109 220/250 - 101 83/250=8 137/250
.
554
9 1/12 - 1 3/16=9 4/48 - 1 9/48=8 52/48 - 1 9/48=7 43/48
7 2/7 - 4 5/14=7 4/14 - 4 5/14=7 4/14 - 4 4/14 - 1/14=3 - 1/14=2 13/14
12 11/18 - 5 25/36=12 22/36 - 5 25/36=12 22/36 - 5 - 22/36 - 3/36=7 - 3/36=6 33/36=6 11/12
30 37/44 - 24 21/22=30 37/44 - 24 42/44=30 37/44 - 24 37/44 - 5/44=6 - 5/44=5 39/44
6 7/9 - 3 22/27=6 21/27 - 3 22/27=6 21/27 - 3 21/27 - 1/27=3 - 1/27=2 26/27
8 13/20 - 5 27/40=8 26/40 - 5 27/40=8 26/40 - 5 26/40 - 1/40=3-1/40=2 39/40
15 4/9 - 9 17/18=15 8/18 - 9 17/18=15 8/18 - 9 8/18 - 9/18=6 - 9/18=5 9/18=5 1/2
43 21/26 - 28 11/13=43 21/26 - 28 22/26=43 21/26 - 28 21/26 - 1/26=15 - 1/26=14 25/26