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곱셈: 2 x 21X5

1

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

2

		9	9
		5	8
	7	9	2
4	9	5	0
5	7	4	2

3

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

4

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

5

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

6

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

7

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

8

		8	1
		5	7
	5	6	7
4	0	5	0
4	6	1	7

9

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

10

		6	6
		1	0
			0
	6	6	0
	6	6	0

11

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

12

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

13

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

14

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

15

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

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