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곱셈: 2 x 23X5

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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