About subtracting results of 181
24:34
46:46
83:38
35:06
23:21
27:28
48:05
36:10
50:21
32:02
32:29
30:08
36:48
37:20
39:07
34:03
163:46
61:21
131:28
199:38
43:46
53:14
135:49
162:52
65:44
71:47
06:20
50:23
114:13
96:56
50:49
85:49
80:25
83:40
77:35
111:40
74:44
127:33
69:37
148:50
74:54
93:25
110:54