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곱셈: 3 x 21X5

1

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

2

		9	1	9
			4	1
		9	1	9
3	6	7	6	0
3	7	6	7	9

3

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

4

		4	9	3
			3	0
				0
1	4	7	9	0
1	4	7	9	0

5

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

6

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

7

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

8

		3	5	0
			1	4
	1	4	0	0
	3	5	0	0
	4	9	0	0

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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