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곱셈: 2 x 21X0

1

		1	0
		7	1
		1	0
	7	0	0
	7	1	0

2

		7	7
		4	3
	2	3	1
3	0	8	0
3	3	1	1

3

		1	6
		4	0
			0
	6	4	0
	6	4	0

4

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

5

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

6

		9	6
		5	1
		9	6
4	8	0	0
4	8	9	6

7

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

8

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

9

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

10

		9	5
		2	3
	2	8	5
1	9	0	0
2	1	8	5

11

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

12

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

13

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

14

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

15

		4	3
		9	0
			0
3	8	7	0
3	8	7	0

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