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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		2	9
		6	0
			0
1	7	4	0
1	7	4	0

9

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

10

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

11

		6	1
		1	7
	4	2	7
	6	1	0
1	0	3	7

12

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

13

		6	4
		7	0
			0
4	4	8	0
4	4	8	0

14

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

15

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

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