About subtracting results of 178
83:38
23:21
27:28
48:05
36:10
50:21
35:06
32:02
30:08
32:29
36:48
37:20
39:07
34:03
163:46
61:21
199:38
131:28
53:14
43:46
71:47
06:20
162:52
135:49
65:44
50:23
114:13
96:56
50:49
80:25
83:40
85:49
77:35
111:40
74:44
127:33
69:37
148:50
74:54
93:25