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곱셈 2자리 X 2자리

1

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

2

		4	3
		6	5
	2	1	5
2	5	8	0
2	7	9	5

3

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

4

		1	1
		7	7
		7	7
	7	7	0
	8	4	7

5

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

6

		4	7
		3	6
	2	8	2
1	4	1	0
1	6	9	2

7

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

8

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

9

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

10

		2	0
		2	3
		6	0
	4	0	0
	4	6	0

11

		1	5
		1	0
			0
	1	5	0
	1	5	0

12

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

13

		3	1
		1	3
		9	3
	3	1	0
	4	0	3

14

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

15

		9	1
		4	9
	8	1	9
3	6	4	0
4	4	5	9

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