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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

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

6

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

7

		9	3
		4	5
	4	6	5
3	7	2	0
4	1	8	5

8

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

9

		3	8
		2	4
	1	5	2
	7	6	0
	9	1	2

10

		3	9
		5	3
	1	1	7
1	9	5	0
2	0	6	7

11

		4	5
		1	4
	1	8	0
	4	5	0
	6	3	0

12

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

13

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

14

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

15

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

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