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곱셈: 2 x 23X9

1

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

2

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

3

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

4

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

5

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

6

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

7

		4	0
		9	4
	1	6	0
3	6	0	0
3	7	6	0

8

		2	0
		2	3
		6	0
	4	0	0
	4	6	0

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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