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곱셈: 2 x 21X0

1

		1	0
		2	3
		3	0
	2	0	0
	2	3	0

2

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

3

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

4

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

5

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

6

		1	1
		7	3
		3	3
	7	7	0
	8	0	3

7

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

8

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

9

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

10

		3	2
		1	6
	1	9	2
	3	2	0
	5	1	2

11

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

12

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

13

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

14

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

15

		3	0
		2	3
		9	0
	6	0	0
	6	9	0

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