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곱셈: 2 x 21X2

1

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

2

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

3

		9	5
		7	0
			0
6	6	5	0
6	6	5	0

4

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

5

		7	9
		3	8
	6	3	2
2	3	7	0
3	0	0	2

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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