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곱셈: 2 x 21X8

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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