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곱셈: 2 x 21X2

1

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

2

		9	4
		1	5
	4	7	0
	9	4	0
1	4	1	0

3

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

4

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

5

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

6

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

7

		9	5
		6	0
			0
5	7	0	0
5	7	0	0

8

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

9

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

10

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

11

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

12

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

13

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

14

		2	3
		4	2
		4	6
	9	2	0
	9	6	6

15

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

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