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곱셈: 2 x 21X1

1

		1	1
		1	9
		9	9
	1	1	0
	2	0	9

2

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

3

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

4

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

5

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

6

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

7

		5	8
		5	2
	1	1	6
2	9	0	0
3	0	1	6

8

		2	1
		4	7
	1	4	7
	8	4	0
	9	8	7

9

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

10

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

11

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

12

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

13

		3	3
		9	5
	1	6	5
2	9	7	0
3	1	3	5

14

		5	4
		4	8
	4	3	2
2	1	6	0
2	5	9	2

15

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

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