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곱셈: 2 x 2

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

		1	1
		4	5
		5	5
	4	4	0
	4	9	5

10

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

11

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

12

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

13

		1	0
		9	2
		2	0
	9	0	0
	9	2	0

14

		3	0
		6	6
	1	8	0
1	8	0	0
1	9	8	0

15

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

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