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곱셈: 2 x 23X4

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

		7	0
		6	0
			0
4	2	0	0
4	2	0	0

13

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

14

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

15

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

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