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곱셈: 2 x 21X9

1

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

2

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

3

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

4

		1	0
		5	5
		5	0
	5	0	0
	5	5	0

5

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

6

		9	5
		7	0
			0
6	6	5	0
6	6	5	0

7

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

8

		8	5
		2	7
	5	9	5
1	7	0	0
2	2	9	5

9

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

10

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

11

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

12

		4	3
		2	9
	3	8	7
	8	6	0
1	2	4	7

13

		7	3
		5	0
			0
3	6	5	0
3	6	5	0

14

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

15

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

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