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곱셈 2자리 X 1자리

	2	7
		7
1	8	9

	2	7
		6
1	6	2

	3	5
		3
1	0	5

	2	0
		5
1	0	0

		4	9
			1
		4	9

	2	0
		5
1	0	0

	8	2
		7
5	7	4

		1	2
			4
		4	8

	6	1
		2
1	2	2

	6	4
		3
1	9	2

	6	8
		2
1	3	6

	3	0
		6
1	8	0

		1	6
			4
		6	4

	5	7
		5
2	8	5

	4	9
		8
3	9	2