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곱셈: 2 x 21X5

1

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

2

		1	1
		4	0
			0
	4	4	0
	4	4	0

3

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

4

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

5

		9	0
		1	3
	2	7	0
	9	0	0
1	1	7	0

6

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

7

		3	9
		1	0
			0
	3	9	0
	3	9	0

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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