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곱셈: 2 x 21X9

1

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

2

		9	5
		5	5
	4	7	5
4	7	5	0
5	2	2	5

3

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

4

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

5

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

6

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

7

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

8

		1	1
		4	0
			0
	4	4	0
	4	4	0

9

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

10

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

11

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

12

		4	4
		7	8
	3	5	2
3	0	8	0
3	4	3	2

13

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

14

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

15

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

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