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곱셈 2자리 X 1자리

	3	4
		7
2	3	8

		1	7
			2
		3	4

	4	7
		5
2	3	5

	7	6
		3
2	2	8

	8	6
		3
2	5	8

	2	7
		9
2	4	3

	6	3
		8
5	0	4

		1	6
			4
		6	4

		2	5
			3
		7	5

	6	2
		5
3	1	0

	6	1
		4
2	4	4

	2	3
		8
1	8	4

	2	0
		6
1	2	0

	4	5
		8
3	6	0

	5	6
		7
3	9	2