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곱셈: 2 x 21X7

1

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

2

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

3

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

4

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

5

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

6

		3	1
		9	3
		9	3
2	7	9	0
2	8	8	3

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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