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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

		3	2
		3	0
			0
	9	6	0
	9	6	0

7

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

8

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

9

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

10

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

11

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

12

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

13

		9	4
		5	9
	8	4	6
4	7	0	0
5	5	4	6

14

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

15

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

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