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곱셈: 2 x 21X0

1

		1	0
		1	4
		4	0
	1	0	0
	1	4	0

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		1	3
		6	0
			0
	7	8	0
	7	8	0

12

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

13

		1	6
		4	6
		9	6
	6	4	0
	7	3	6

14

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

15

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

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