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곱셈: 2 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

		6	7
		5	8
	5	3	6
3	3	5	0
3	8	8	6

11

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

12

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

13

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

14

		3	1
		5	1
		3	1
1	5	5	0
1	5	8	1

15

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

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