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곱셈: 2 x 14X7

	4	7
		9
4	2	3

	2	5
		9
2	2	5

		1	2
			3
		3	6

	6	1
		4
2	4	4

	4	8
		8
3	8	4

		3	5
			2
		7	0

	8	5
		2
1	7	0

	4	7
		6
2	8	2

	3	1
		7
2	1	7

	3	6
		6
2	1	6

		2	5
			3
		7	5

	4	0
		3
1	2	0

	6	1
		7
4	2	7

	5	2
		4
2	0	8

	2	2
		5
1	1	0