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곱셈: 2 x 21X8

1

		1	8
		4	0
			0
	7	2	0
	7	2	0

2

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

3

		4	0
		2	8
	3	2	0
	8	0	0
1	1	2	0

4

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

5

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

6

		2	7
		5	1
		2	7
1	3	5	0
1	3	7	7

7

		7	5
		8	0
			0
6	0	0	0
6	0	0	0

8

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

9

		1	7
		5	0
			0
	8	5	0
	8	5	0

10

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

11

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

12

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

13

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

14

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

15

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

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