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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		4	2
		5	2
		8	4
2	1	0	0
2	1	8	4

9

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

10

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

11

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

12

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

13

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

14

		5	0
		1	8
	4	0	0
	5	0	0
	9	0	0

15

		2	6
		3	6
	1	5	6
	7	8	0
	9	3	6

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