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곱셈: 2 x 21X5

1

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

2

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

3

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

4

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

5

		2	2
		2	0
			0
	4	4	0
	4	4	0

6

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

7

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

8

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

9

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

10

		1	9
		1	5
		9	5
	1	9	0
	2	8	5

11

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

12

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

13

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

14

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

15

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

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