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곱셈: 3 x 22X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

		8	0	5
			6	0
				0
4	8	3	0	0
4	8	3	0	0

12

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

13

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

14

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

15

		5	6	1
			1	8
	4	4	8	8
	5	6	1	0
1	0	0	9	8

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