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곱셈: 2 x 21X7

1

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

2

		1	0
		2	8
		8	0
	2	0	0
	2	8	0

3

		6	4
		7	9
	5	7	6
4	4	8	0
5	0	5	6

4

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

5

		3	3
		6	0
			0
1	9	8	0
1	9	8	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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