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곱셈: 2 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

		8	3
		3	0
			0
2	4	9	0
2	4	9	0

8

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

9

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

10

		1	1
		5	2
		2	2
	5	5	0
	5	7	2

11

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

12

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

13

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

14

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

15

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

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