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곱셈: 3 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		2	5	5
			9	1
		2	5	5
2	2	9	5	0
2	3	2	0	5

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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