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곱셈: 2 x 21X2

1

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

2

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

3

		2	4
		2	0
			0
	4	8	0
	4	8	0

4

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

5

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

6

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

7

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

8

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

9

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

10

		1	9
		5	1
		1	9
	9	5	0
	9	6	9

11

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

12

		1	0
		3	0
			0
	3	0	0
	3	0	0

13

		8	1
		1	0
			0
	8	1	0
	8	1	0

14

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

15

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

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