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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

		1	3
		7	1
		1	3
	9	1	0
	9	2	3

13

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

14

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

15

		6	3
		6	5
	3	1	5
3	7	8	0
4	0	9	5

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