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곱셈: 3 x 21X2

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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