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곱셈: 2 x 21X9

1

		1	9
		3	5
		9	5
	5	7	0
	6	6	5

2

		7	0
		4	0
			0
2	8	0	0
2	8	0	0

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

		3	4
		1	0
			0
	3	4	0
	3	4	0

14

		5	6
		6	6
	3	3	6
3	3	6	0
3	6	9	6

15

		3	0
		3	7
	2	1	0
	9	0	0
1	1	1	0

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