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곱셈: 2 x 21X7

1

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

2

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

3

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

4

		5	4
		5	5
	2	7	0
2	7	0	0
2	9	7	0

5

		2	3
		3	9
	2	0	7
	6	9	0
	8	9	7

6

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

7

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

8

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

9

		9	7
		5	1
		9	7
4	8	5	0
4	9	4	7

10

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

11

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

12

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

13

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

14

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

15

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

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