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곱셈: 3 x 21X0

1

		1	0	0
			2	6
		6	0	0
	2	0	0	0
	2	6	0	0

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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