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곱셈 2자리 X 2자리

1

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

2

		3	2
		2	0
			0
	6	4	0
	6	4	0

3

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

4

		5	8
		2	8
	4	6	4
1	1	6	0
1	6	2	4

5

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

6

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

7

		9	5
		6	7
	6	6	5
5	7	0	0
6	3	6	5

8

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

9

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

10

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

11

		5	3
		6	2
	1	0	6
3	1	8	0
3	2	8	6

12

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

13

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

14

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

15

		6	5
		1	0
			0
	6	5	0
	6	5	0

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