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곱셈: 2 x 21X9

1

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

2

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

3

		4	5
		5	9
	4	0	5
2	2	5	0
2	6	5	5

4

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

5

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

6

		1	0
		9	1
		1	0
	9	0	0
	9	1	0

7

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

8

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

9

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

10

		4	5
		2	4
	1	8	0
	9	0	0
1	0	8	0

11

		9	9
		6	0
			0
5	9	4	0
5	9	4	0

12

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

13

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

14

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

15

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

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