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곱셈: 2 x 21X9

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

		7	9
		3	3
	2	3	7
2	3	7	0
2	6	0	7

14

		5	1
		3	3
	1	5	3
1	5	3	0
1	6	8	3

15

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

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