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곱셈 2자리 X 1자리

	5	2
		4
2	0	8

	4	6
		5
2	3	0

	5	8
		4
2	3	2

		1	3
			4
		5	2

	8	4
		2
1	6	8

		1	2
			7
		8	4

		1	2
			7
		8	4

	4	4
		5
2	2	0

	7	8
		3
2	3	4

	4	8
		4
1	9	2

		6	2
			1
		6	2

		5	7
			1
		5	7

		2	0
			1
		2	0

		2	4
			4
		9	6

	2	8
		5
1	4	0