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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

		6	0
		5	8
	4	8	0
3	0	0	0
3	4	8	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

		1	6
		5	5
		8	0
	8	0	0
	8	8	0

14

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

15

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

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