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곱셈: 2 x 21X8

1

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

2

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

3

		2	5
		5	2
		5	0
1	2	5	0
1	3	0	0

4

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

5

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

6

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

7

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

8

		5	3
		6	9
	4	7	7
3	1	8	0
3	6	5	7

9

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

10

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

11

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

12

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

13

		5	9
		3	3
	1	7	7
1	7	7	0
1	9	4	7

14

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

15

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

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