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곱셈: 2 x 21X9

1

		1	9
		5	1
		1	9
	9	5	0
	9	6	9

2

		9	4
		1	6
	5	6	4
	9	4	0
1	5	0	4

3

		3	0
		9	6
	1	8	0
2	7	0	0
2	8	8	0

4

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

5

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

6

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

7

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

8

		9	7
		1	5
	4	8	5
	9	7	0
1	4	5	5

9

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

10

		3	0
		8	4
	1	2	0
2	4	0	0
2	5	2	0

11

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

12

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

13

		4	9
		9	4
	1	9	6
4	4	1	0
4	6	0	6

14

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

15

		4	2
		9	6
	2	5	2
3	7	8	0
4	0	3	2

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