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곱셈: 2 x 21X9

1

		1	9
		5	2
		3	8
	9	5	0
	9	8	8

2

		5	1
		3	8
	4	0	8
1	5	3	0
1	9	3	8

3

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

4

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

5

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

6

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

7

		3	3
		9	5
	1	6	5
2	9	7	0
3	1	3	5

8

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

9

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

10

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

11

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

12

		1	0
		1	6
		6	0
	1	0	0
	1	6	0

13

		6	3
		7	0
			0
4	4	1	0
4	4	1	0

14

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

15

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

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