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곱셈: 2 x 21X7

1

		1	7
		5	1
		1	7
	8	5	0
	8	6	7

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		7	5
		7	0
			0
5	2	5	0
5	2	5	0

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