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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

		2	6
		2	8
	2	0	8
	5	2	0
	7	2	8

10

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

11

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

12

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

13

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

14

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

15

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

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