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곱셈: 2 x 21X9

1

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

2

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

3

		6	0
		1	3
	1	8	0
	6	0	0
	7	8	0

4

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

5

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

6

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

7

		8	2
		6	7
	5	7	4
4	9	2	0
5	4	9	4

8

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

9

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

10

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

11

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

12

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

13

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

14

		3	8
		1	5
	1	9	0
	3	8	0
	5	7	0

15

		4	3
		1	8
	3	4	4
	4	3	0
	7	7	4

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