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곱셈: 2 x 21X4

1

		1	4
		3	0
			0
	4	2	0
	4	2	0

2

		1	1
		9	7
		7	7
	9	9	0
1	0	6	7

3

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

4

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

5

		1	8
		4	4
		7	2
	7	2	0
	7	9	2

6

		5	3
		4	8
	4	2	4
2	1	2	0
2	5	4	4

7

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

8

		6	5
		1	6
	3	9	0
	6	5	0
1	0	4	0

9

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

10

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

11

		4	4
		4	1
		4	4
1	7	6	0
1	8	0	4

12

		3	8
		4	0
			0
1	5	2	0
1	5	2	0

13

		3	1
		1	0
			0
	3	1	0
	3	1	0

14

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

15

		8	8
		2	1
		8	8
1	7	6	0
1	8	4	8

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