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곱셈: 2 x 21X2

1

		1	2
		9	4
		4	8
1	0	8	0
1	1	2	8

2

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

3

		6	4
		8	4
	2	5	6
5	1	2	0
5	3	7	6

4

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

5

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

6

		1	4
		3	7
		9	8
	4	2	0
	5	1	8

7

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

8

		2	1
		8	1
		2	1
1	6	8	0
1	7	0	1

9

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

10

		8	9
		8	1
		8	9
7	1	2	0
7	2	0	9

11

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

12

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

13

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

14

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

15

		2	7
		7	3
		8	1
1	8	9	0
1	9	7	1

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