subtracting in excel

1:17

4:46

2:09

3:09

3:38

4:47

8:13

6:15

22:22

8:34

5:30

5:50

4:36

2:33

5:30

3:36

7:26

2:44

4:39

21:02

6:48

4:34

6:20

5:34

2:52

3:55

4:02

2:12

12:46

9:49

6:01

12:55

5:30

8:22

2:08

8:08

3:30

10:20

14:26

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