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곱셈: 2 x 21X4

1

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

2

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

3

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

4

		1	1
		7	3
		3	3
	7	7	0
	8	0	3

5

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

6

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

7

		5	0
		1	2
	1	0	0
	5	0	0
	6	0	0

8

		4	5
		1	6
	2	7	0
	4	5	0
	7	2	0

9

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

10

		1	0
		9	4
		4	0
	9	0	0
	9	4	0

11

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

12

		5	1
		3	8
	4	0	8
1	5	3	0
1	9	3	8

13

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

14

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

15

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

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