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곱셈: 2 x 21X9

1

		1	9
		8	4
		7	6
1	5	2	0
1	5	9	6

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

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

12

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

13

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

14

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

15

		8	1
		1	1
		8	1
	8	1	0
	8	9	1

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