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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

		5	0
		6	3
	1	5	0
3	0	0	0
3	1	5	0

11

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

12

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

13

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

14

		2	6
		1	0
			0
	2	6	0
	2	6	0

15

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

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