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곱셈: 4 x 21X7

1

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

2

		1	0	0	1
				1	4
		4	0	0	4
	1	0	0	1	0
	1	4	0	1	4

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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