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곱셈: 2 x 21X3

1

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

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

		1	1
		3	1
		1	1
	3	3	0
	3	4	1

15

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

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