simplify calculator

2:38

48:33

16:54

2:27

8:05

5:01

4:11

10:33

10:24

18:02

5:23

5:17

5:48

4:49

4:23

19:08

4:40

10:31

6:55

11:53

9:47

2:30

3:32

5:31

4:21

25:54

1:31

5:12

4:06

4:47

5:08

12:20

8:25

6:03

5:08

5:00

6:29

6:10

6:13

5:49