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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

		7	4
		4	5
	3	7	0
2	9	6	0
3	3	3	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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