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곱셈: 3 x 21X4

1

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

2

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

3

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

4

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

5

		4	7	4
			5	3
	1	4	2	2
2	3	7	0	0
2	5	1	2	2

6

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

7

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

8

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

9

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

10

		5	1	1
			1	0
				0
	5	1	1	0
	5	1	1	0

11

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

12

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

13

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

14

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

15

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

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