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곱셈: 2 x 21X0

1

		1	0
		4	1
		1	0
	4	0	0
	4	1	0

2

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

3

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

4

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

5

		5	2
		5	9
	4	6	8
2	6	0	0
3	0	6	8

6

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

7

		1	1
		1	1
		1	1
	1	1	0
	1	2	1

8

		9	0
		2	8
	7	2	0
1	8	0	0
2	5	2	0

9

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

10

		7	3
		2	7
	5	1	1
1	4	6	0
1	9	7	1

11

		2	5
		9	2
		5	0
2	2	5	0
2	3	0	0

12

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

13

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

14

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

15

		7	4
		4	7
	5	1	8
2	9	6	0
3	4	7	8

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