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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		8	2
		7	1
		8	2
5	7	4	0
5	8	2	2

12

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

13

		9	4
		8	7
	6	5	8
7	5	2	0
8	1	7	8

14

		2	0
		7	1
		2	0
1	4	0	0
1	4	2	0

15

		2	4
		1	3
		7	2
	2	4	0
	3	1	2

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