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곱셈: 2 x 21X0

1

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

2

		3	9
		2	1
		3	9
	7	8	0
	8	1	9

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		9	5
		2	0
			0
1	9	0	0
1	9	0	0

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