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곱셈: 2 x 21X0

1

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

2

		7	5
		5	3
	2	2	5
3	7	5	0
3	9	7	5

3

		1	4
		2	1
		1	4
	2	8	0
	2	9	4

4

		9	2
		9	7
	6	4	4
8	2	8	0
8	9	2	4

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		4	5
		5	1
		4	5
2	2	5	0
2	2	9	5

15

		6	0
		5	8
	4	8	0
3	0	0	0
3	4	8	0

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