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곱셈: 3 x 21X4

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		1	2	1
			1	0
				0
	1	2	1	0
	1	2	1	0

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