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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

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

6

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

7

		8	2
		1	0
			0
	8	2	0
	8	2	0

8

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

9

		5	0
		5	5
	2	5	0
2	5	0	0
2	7	5	0

10

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

11

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

12

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

13

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

14

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

15

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

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