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곱셈: 3 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

		8	7	1
			7	1
		8	7	1
6	0	9	7	0
6	1	8	4	1

10

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

11

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

12

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

13

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

14

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

15

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

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