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곱셈: 3 x 21X5

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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