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곱셈: 3 x 21X4

1

		1	4	0
			1	3
		4	2	0
	1	4	0	0
	1	8	2	0

2

		3	9	7
			2	5
	1	9	8	5
	7	9	4	0
	9	9	2	5

3

		1	5	4
			6	5
		7	7	0
	9	2	4	0
1	0	0	1	0

4

		1	4	6
			2	8
	1	1	6	8
	2	9	2	0
	4	0	8	8

5

		4	7	7
			1	8
	3	8	1	6
	4	7	7	0
	8	5	8	6

6

		4	3	1
			8	2
		8	6	2
3	4	4	8	0
3	5	3	4	2

7

		2	8	6
			2	5
	1	4	3	0
	5	7	2	0
	7	1	5	0

8

		1	9	4
			3	8
	1	5	5	2
	5	8	2	0
	7	3	7	2

9

		4	5	7
			2	1
		4	5	7
	9	1	4	0
	9	5	9	7

10

		2	5	3
			1	9
	2	2	7	7
	2	5	3	0
	4	8	0	7

11

		4	5	0
			3	6
	2	7	0	0
1	3	5	0	0
1	6	2	0	0

12

		2	3	3
			3	7
	1	6	3	1
	6	9	9	0
	8	6	2	1

13

		3	0	1
			2	8
	2	4	0	8
	6	0	2	0
	8	4	2	8

14

		4	2	1
			9	5
	2	1	0	5
3	7	8	9	0
3	9	9	9	5

15

		2	3	2
			4	0
				0
	9	2	8	0
	9	2	8	0

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