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곱셈: 2 x 21X7

1

		1	7
		5	3
		5	1
	8	5	0
	9	0	1

2

		4	1
		1	1
		4	1
	4	1	0
	4	5	1

3

		1	6
		4	0
			0
	6	4	0
	6	4	0

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

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

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