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곱셈: 2 x 21X5

1

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

2

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

3

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

4

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

5

		9	1
		6	0
			0
5	4	6	0
5	4	6	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		2	5
		8	3
		7	5
2	0	0	0
2	0	7	5

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