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곱셈: 2 x 23X5

1

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

2

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

3

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

4

		8	1
		1	1
		8	1
	8	1	0
	8	9	1

5

		5	2
		6	7
	3	6	4
3	1	2	0
3	4	8	4

6

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

7

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

8

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

9

		1	5
		2	1
		1	5
	3	0	0
	3	1	5

10

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

11

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

12

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

13

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

14

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

15

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

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