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곱셈: 2 x 2

1

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

2

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

3

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

4

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

5

		9	2
		5	7
	6	4	4
4	6	0	0
5	2	4	4

6

		1	7
		5	3
		5	1
	8	5	0
	9	0	1

7

		4	5
		2	0
			0
	9	0	0
	9	0	0

8

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

9

		9	3
		4	4
	3	7	2
3	7	2	0
4	0	9	2

10

		6	0
		8	4
	2	4	0
4	8	0	0
5	0	4	0

11

		5	3
		1	7
	3	7	1
	5	3	0
	9	0	1

12

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

13

		2	0
		1	1
		2	0
	2	0	0
	2	2	0

14

		4	1
		9	3
	1	2	3
3	6	9	0
3	8	1	3

15

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

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