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곱셈: 2 x 2

1

		5	0
		7	4
	2	0	0
3	5	0	0
3	7	0	0

2

		7	5
		5	5
	3	7	5
3	7	5	0
4	1	2	5

3

		5	5
		6	4
	2	2	0
3	3	0	0
3	5	2	0

4

		2	8
		7	5
	1	4	0
1	9	6	0
2	1	0	0

5

		8	3
		3	0
			0
2	4	9	0
2	4	9	0

6

		4	6
		1	1
		4	6
	4	6	0
	5	0	6

7

		3	0
		3	1
		3	0
	9	0	0
	9	3	0

8

		7	3
		9	0
			0
6	5	7	0
6	5	7	0

9

		2	0
		2	6
	1	2	0
	4	0	0
	5	2	0

10

		2	2
		5	1
		2	2
1	1	0	0
1	1	2	2

11

		1	0
		7	3
		3	0
	7	0	0
	7	3	0

12

		8	6
		1	2
	1	7	2
	8	6	0
1	0	3	2

13

		9	3
		3	7
	6	5	1
2	7	9	0
3	4	4	1

14

		2	6
		9	1
		2	6
2	3	4	0
2	3	6	6

15

		9	4
		2	5
	4	7	0
1	8	8	0
2	3	5	0

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