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곱셈: 3 x 21X2

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

		2	9	5
			6	0
				0
1	7	7	0	0
1	7	7	0	0

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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