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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

		6	1
		1	8
	4	8	8
	6	1	0
1	0	9	8

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		8	5
		5	7
	5	9	5
4	2	5	0
4	8	4	5

15

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

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