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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

		1	3
		5	3
		3	9
	6	5	0
	6	8	9

13

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

14

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

15

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

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