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곱셈: 2 x 21X9

1

		1	9
		1	5
		9	5
	1	9	0
	2	8	5

2

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

3

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

4

		1	7
		1	8
	1	3	6
	1	7	0
	3	0	6

5

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

6

		1	1
		7	6
		6	6
	7	7	0
	8	3	6

7

		3	9
		1	3
	1	1	7
	3	9	0
	5	0	7

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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