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곱셈: 3 x 21X8

1

		1	8	6
			3	5
		9	3	0
	5	5	8	0
	6	5	1	0

2

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

3

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

4

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

5

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

6

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

7

		3	8	1
			3	0
				0
1	1	4	3	0
1	1	4	3	0

8

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

9

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

10

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

11

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

12

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

13

		4	7	6
			6	0
				0
2	8	5	6	0
2	8	5	6	0

14

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

15

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

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