Show:
x3
x5
x7
x9
x12
100

3x5

15

100

5x4

20

100

7x3

21

100

9x4

36

100

12x7

84

200

3x10

30

200

5x6

30

200

7x4

28

200

9x5

45

200

12x9

108

300

3x4

12

300

5x5

25

300

7x5

35

300

9x6

54

300

12x8

96

400

3x6

18

400

5x11

55

400

7x7

49

400

9x8

72

400

12x11

132

500

3x12

36

500

5x12

60

500

7x9

63

500

9x9

81

500

12x12

144