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곱셈: 2 x 21X3

1

		1	3
		6	3
		3	9
	7	8	0
	8	1	9

2

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

3

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

4

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

5

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

6

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

7

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

8

		7	9
		7	6
	4	7	4
5	5	3	0
6	0	0	4

9

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

10

		9	8
		6	0
			0
5	8	8	0
5	8	8	0

11

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

12

		6	0
		1	2
	1	2	0
	6	0	0
	7	2	0

13

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

14

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

15

		6	0
		4	4
	2	4	0
2	4	0	0
2	6	4	0

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