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곱셈: 4 x 23X4

1

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

2

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

3

		1	0	1	0
				9	3
		3	0	3	0
	9	0	9	0	0
	9	3	9	3	0

4

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

5

		5	2	5	2
				1	2
	1	0	5	0	4
	5	2	5	2	0
	6	3	0	2	4

6

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

7

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

8

		6	1	2	6
				3	2
	1	2	2	5	2
1	8	3	7	8	0
1	9	6	0	3	2

9

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

10

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

11

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

12

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

13

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

14

		5	6	8	4
				7	4
	2	2	7	3	6
3	9	7	8	8	0
4	2	0	6	1	6

15

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

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