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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		9	0
		6	1
		9	0
5	4	0	0
5	4	9	0

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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