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곱셈: 2 x 21X8

1

		1	8
		5	1
		1	8
	9	0	0
	9	1	8

2

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

3

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

4

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

5

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

6

		1	4
		4	5
		7	0
	5	6	0
	6	3	0

7

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

8

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

9

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

10

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

11

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

12

		1	6
		4	0
			0
	6	4	0
	6	4	0

13

		2	4
		2	0
			0
	4	8	0
	4	8	0

14

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

15

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

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