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곱셈: 2 x 21X2

1

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

2

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

3

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

4

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

5

		5	3
		3	9
	4	7	7
1	5	9	0
2	0	6	7

6

		5	1
		4	5
	2	5	5
2	0	4	0
2	2	9	5

7

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

8

		1	3
		7	7
		9	1
	9	1	0
1	0	0	1

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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