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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

		3	0
		3	3
		9	0
	9	0	0
	9	9	0

7

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

8

		2	3
		1	2
		4	6
	2	3	0
	2	7	6

9

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

10

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

11

		9	5
		4	3
	2	8	5
3	8	0	0
4	0	8	5

12

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

13

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

14

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

15

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

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