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곱셈: 3 x 21X3

1

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

2

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

3

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

4

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

5

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

6

		9	7	5
			2	1
		9	7	5
1	9	5	0	0
2	0	4	7	5

7

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

8

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

9

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

10

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

11

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

12

		3	6	5
			2	2
		7	3	0
	7	3	0	0
	8	0	3	0

13

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

14

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

15

		3	3	5
			5	3
	1	0	0	5
1	6	7	5	0
1	7	7	5	5

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