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곱셈: 2 x 21X2

1

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

2

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

3

		8	0
		5	8
	6	4	0
4	0	0	0
4	6	4	0

4

		2	5
		4	4
	1	0	0
1	0	0	0
1	1	0	0

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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