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곱셈: 2 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		1	0
		1	2
		2	0
	1	0	0
	1	2	0

12

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

13

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

14

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

15

		1	0
		6	6
		6	0
	6	0	0
	6	6	0

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