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곱셈: 2 x 21X2

1

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

2

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

3

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

4

		1	3
		3	1
		1	3
	3	9	0
	4	0	3

5

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

6

		8	4
		1	2
	1	6	8
	8	4	0
1	0	0	8

7

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

8

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

9

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

10

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

11

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

12

		6	2
		2	4
	2	4	8
1	2	4	0
1	4	8	8

13

		2	0
		2	4
		8	0
	4	0	0
	4	8	0

14

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

15

		3	5
		4	3
	1	0	5
1	4	0	0
1	5	0	5

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