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곱셈: 2 x 21X0

1

		1	0
		2	1
		1	0
	2	0	0
	2	1	0

2

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

3

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

4

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

5

		8	4
		5	0
			0
4	2	0	0
4	2	0	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		4	5
		9	3
	1	3	5
4	0	5	0
4	1	8	5

15

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

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