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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

		1	7
		5	0
			0
	8	5	0
	8	5	0

7

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

8

		1	1
		2	6
		6	6
	2	2	0
	2	8	6

9

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

10

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

11

		3	4
		1	3
	1	0	2
	3	4	0
	4	4	2

12

		1	4
		5	8
	1	1	2
	7	0	0
	8	1	2

13

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

14

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

15

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

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