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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

		8	6
		1	5
	4	3	0
	8	6	0
1	2	9	0

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		5	8
		5	8
	4	6	4
2	9	0	0
3	3	6	4

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