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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		4	4
		9	9
	3	9	6
3	9	6	0
4	3	5	6

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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