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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

		9	5
		8	0
			0
7	6	0	0
7	6	0	0

6

		6	3
		5	3
	1	8	9
3	1	5	0
3	3	3	9

7

		1	7
		5	3
		5	1
	8	5	0
	9	0	1

8

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

9

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

10

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

11

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

12

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

13

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

14

		3	5
		2	2
		7	0
	7	0	0
	7	7	0

15

		4	9
		2	1
		4	9
	9	8	0
1	0	2	9

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