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곱셈: 2 x 21X8

1

		1	8
		3	9
	1	6	2
	5	4	0
	7	0	2

2

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

3

		7	5
		4	4
	3	0	0
3	0	0	0
3	3	0	0

4

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

5

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

6

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

7

		3	2
		1	6
	1	9	2
	3	2	0
	5	1	2

8

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

9

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

10

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

11

		4	5
		2	6
	2	7	0
	9	0	0
1	1	7	0

12

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

13

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

14

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

15

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

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