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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

		9	3
		7	2
	1	8	6
6	5	1	0
6	6	9	6

10

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

11

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

12

		3	0
		6	6
	1	8	0
1	8	0	0
1	9	8	0

13

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

14

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

15

		1	9
		3	0
			0
	5	7	0
	5	7	0

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