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곱셈: 3 x 21X8

1

		1	8	2
			5	0
				0
	9	1	0	0
	9	1	0	0

2

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

3

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

4

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

5

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

6

		1	1	0
			5	9
		9	9	0
	5	5	0	0
	6	4	9	0

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		8	8	1
			1	0
				0
	8	8	1	0
	8	8	1	0

15

		1	2	8
			8	0
				0
1	0	2	4	0
1	0	2	4	0

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