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곱셈: 2 x 2

1

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

2

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

3

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

4

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

5

		2	2
		5	9
	1	9	8
1	1	0	0
1	2	9	8

6

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

7

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

8

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

9

		8	3
		7	2
	1	6	6
5	8	1	0
5	9	7	6

10

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

11

		9	4
		2	7
	6	5	8
1	8	8	0
2	5	3	8

12

		5	7
		5	4
	2	2	8
2	8	5	0
3	0	7	8

13

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

14

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

15

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

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