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곱셈 2자리 X 1자리

	2	8
		4
1	1	2

		3	4
			2
		6	8

		3	9
			1
		3	9

	9	6
		4
3	8	4

	9	3
		3
2	7	9

	4	1
		5
2	0	5

	6	4
		4
2	5	6

		2	1
			3
		6	3

	6	9
		5
3	4	5

		4	7
			2
		9	4

		3	7
			2
		7	4

	4	4
		4
1	7	6

		2	2
			2
		4	4

	8	3
		7
5	8	1

	2	3
		9
2	0	7