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곱셈: 4 x 21X3

1

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

2

		2	1	8	3
				4	2
		4	3	6	6
	8	7	3	2	0
	9	1	6	8	6

3

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

4

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

5

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

6

		2	5	0	4
				6	6
	1	5	0	2	4
1	5	0	2	4	0
1	6	5	2	6	4

7

		3	5	1	3
				9	0
					0
3	1	6	1	7	0
3	1	6	1	7	0

8

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

9

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

10

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

11

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

12

		1	1	8	5
				4	0
					0
	4	7	4	0	0
	4	7	4	0	0

13

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

14

		3	3	4	6
				4	9
	3	0	1	1	4
1	3	3	8	4	0
1	6	3	9	5	4

15

		8	3	0	4
				3	0
					0
2	4	9	1	2	0
2	4	9	1	2	0

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