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곱셈: 2 x 21X4

1

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

2

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

3

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

4

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

5

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

6

		7	1
		1	3
	2	1	3
	7	1	0
	9	2	3

7

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

8

		1	9
		4	0
			0
	7	6	0
	7	6	0

9

		4	2
		5	2
		8	4
2	1	0	0
2	1	8	4

10

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

11

		1	3
		3	0
			0
	3	9	0
	3	9	0

12

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

13

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

14

		4	4
		5	2
		8	8
2	2	0	0
2	2	8	8

15

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

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