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곱셈: 2 x 21X1

1

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

2

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

3

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

4

		3	0
		3	0
			0
	9	0	0
	9	0	0

5

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

6

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

7

		8	6
		5	0
			0
4	3	0	0
4	3	0	0

8

		8	4
		3	3
	2	5	2
2	5	2	0
2	7	7	2

9

		1	1
		8	8
		8	8
	8	8	0
	9	6	8

10

		3	1
		3	1
		3	1
	9	3	0
	9	6	1

11

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

12

		9	0
		4	9
	8	1	0
3	6	0	0
4	4	1	0

13

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

14

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

15

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

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