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곱셈: 3 x 21X1

1

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

2

		7	1	0
			7	3
	2	1	3	0
4	9	7	0	0
5	1	8	3	0

3

		6	8	5
			9	4
	2	7	4	0
6	1	6	5	0
6	4	3	9	0

4

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

5

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

6

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

7

		1	0	1
			6	0
				0
	6	0	6	0
	6	0	6	0

8

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

9

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

10

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

11

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

12

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

13

		7	7	3
			2	8
	6	1	8	4
1	5	4	6	0
2	1	6	4	4

14

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

15

		1	1	9
			4	4
		4	7	6
	4	7	6	0
	5	2	3	6

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