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곱셈: 2 x 21X5

1

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

2

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

3

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

4

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

5

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

6

		2	3
		3	1
		2	3
	6	9	0
	7	1	3

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		9	2
		9	0
			0
8	2	8	0
8	2	8	0

15

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

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