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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

		9	4
		9	1
		9	4
8	4	6	0
8	5	5	4

8

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

9

		4	4
		1	0
			0
	4	4	0
	4	4	0

10

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

11

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

12

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

13

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

14

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

15

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

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