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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

		4	2
		2	0
			0
	8	4	0
	8	4	0

6

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

7

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

8

		8	6
		3	0
			0
2	5	8	0
2	5	8	0

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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