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곱셈: 2 x 2

1

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

2

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

3

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

4

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

5

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

6

		9	1
		3	0
			0
2	7	3	0
2	7	3	0

7

		1	2
		1	4
		4	8
	1	2	0
	1	6	8

8

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

9

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

10

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

11

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

12

		8	1
		1	0
			0
	8	1	0
	8	1	0

13

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

14

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

15

		7	6
		2	0
			0
1	5	2	0
1	5	2	0

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