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곱셈: 4 x 21X7

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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