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곱셈: 3 x 21X7

1

		1	7	1
			1	7
	1	1	9	7
	1	7	1	0
	2	9	0	7

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		7	9	0
			3	7
	5	5	3	0
2	3	7	0	0
2	9	2	3	0

12

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

13

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

14

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

15

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

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