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곱셈: 3 x 21X4

1

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

2

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

3

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

4

		2	6	1
			8	7
	1	8	2	7
2	0	8	8	0
2	2	7	0	7

5

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

6

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

7

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

8

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

9

		4	7	3
			5	0
				0
2	3	6	5	0
2	3	6	5	0

10

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

11

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

12

		1	9	4
			5	5
		9	7	0
	9	7	0	0
1	0	6	7	0

13

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

14

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

15

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

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