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곱셈: 2 x 2

1

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

2

		6	3
		4	6
	3	7	8
2	5	2	0
2	8	9	8

3

		1	6
		1	0
			0
	1	6	0
	1	6	0

4

		4	6
		4	5
	2	3	0
1	8	4	0
2	0	7	0

5

		4	3
		2	7
	3	0	1
	8	6	0
1	1	6	1

6

		3	1
		8	0
			0
2	4	8	0
2	4	8	0

7

		1	8
		5	1
		1	8
	9	0	0
	9	1	8

8

		7	1
		1	5
	3	5	5
	7	1	0
1	0	6	5

9

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

10

		6	2
		7	2
	1	2	4
4	3	4	0
4	4	6	4

11

		3	0
		4	1
		3	0
1	2	0	0
1	2	3	0

12

		9	2
		5	1
		9	2
4	6	0	0
4	6	9	2

13

		5	2
		6	5
	2	6	0
3	1	2	0
3	3	8	0

14

		5	1
		4	6
	3	0	6
2	0	4	0
2	3	4	6

15

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

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