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곱셈: 2 x 21X5

1

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

2

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

3

		1	1
		4	3
		3	3
	4	4	0
	4	7	3

4

		9	1
		7	0
			0
6	3	7	0
6	3	7	0

5

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

6

		2	9
		6	0
			0
1	7	4	0
1	7	4	0

7

		6	0
		5	9
	5	4	0
3	0	0	0
3	5	4	0

8

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

9

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

10

		7	1
		5	5
	3	5	5
3	5	5	0
3	9	0	5

11

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

12

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

13

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

14

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

15

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

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