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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

		2	4
		2	2
		4	8
	4	8	0
	5	2	8

10

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

11

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

12

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

13

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

14

		3	0
		3	2
		6	0
	9	0	0
	9	6	0

15

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

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