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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

		2	1
		9	1
		2	1
1	8	9	0
1	9	1	1

8

		5	4
		5	0
			0
2	7	0	0
2	7	0	0

9

		1	1
		1	7
		7	7
	1	1	0
	1	8	7

10

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

11

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

12

		4	1
		1	2
		8	2
	4	1	0
	4	9	2

13

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

14

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

15

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

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