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곱셈: 3 x 21X7

1

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

2

		2	1	0
			5	2
		4	2	0
1	0	5	0	0
1	0	9	2	0

3

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

4

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

5

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

6

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

7

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

8

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

9

		1	6	9
			4	1
		1	6	9
	6	7	6	0
	6	9	2	9

10

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

11

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

12

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

13

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

14

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

15

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

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