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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

		5	0
		5	0
			0
2	5	0	0
2	5	0	0

6

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

7

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

8

		9	2
		3	7
	6	4	4
2	7	6	0
3	4	0	4

9

		5	1
		4	1
		5	1
2	0	4	0
2	0	9	1

10

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

11

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

12

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

13

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

14

		2	3
		4	2
		4	6
	9	2	0
	9	6	6

15

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

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