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곱셈: 2 x 23X7

1

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

2

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

3

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

4

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

5

		1	0
		4	7
		7	0
	4	0	0
	4	7	0

6

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

7

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

8

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

9

		1	4
		5	5
		7	0
	7	0	0
	7	7	0

10

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

11

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

12

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

13

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

14

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

15

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

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