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곱셈: 2 x 21X9

1

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

2

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

3

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

4

		5	1
		2	5
	2	5	5
1	0	2	0
1	2	7	5

5

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

6

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

7

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

8

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

9

		1	0
		7	2
		2	0
	7	0	0
	7	2	0

10

		8	0
		5	5
	4	0	0
4	0	0	0
4	4	0	0

11

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

12

		1	8
		5	5
		9	0
	9	0	0
	9	9	0

13

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

14

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

15

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

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