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곱셈: 2 x 21X9

1

		1	9
		4	8
	1	5	2
	7	6	0
	9	1	2

2

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

3

		1	0
		1	1
		1	0
	1	0	0
	1	1	0

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		1	9
		8	5
		9	5
1	5	2	0
1	6	1	5

12

		1	1
		4	0
			0
	4	4	0
	4	4	0

13

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

14

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

15

		3	8
		9	4
	1	5	2
3	4	2	0
3	5	7	2

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