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곱셈: 3 x 23X7

1

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

2

		1	6	5
			4	7
	1	1	5	5
	6	6	0	0
	7	7	5	5

3

		7	8	8
			5	0
				0
3	9	4	0	0
3	9	4	0	0

4

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

5

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

6

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

7

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

8

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

9

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

10

		4	7	3
			3	5
	2	3	6	5
1	4	1	9	0
1	6	5	5	5

11

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

12

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

13

		8	2	2
			7	9
	7	3	9	8
5	7	5	4	0
6	4	9	3	8

14

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

15

		2	5	5
			9	9
	2	2	9	5
2	2	9	5	0
2	5	2	4	5

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