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곱셈: 4 x 21X2

1

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

2

		3	7	6	5
				8	6
	2	2	5	9	0
3	0	1	2	0	0
3	2	3	7	9	0

3

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

4

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

5

		1	5	4	3
				3	1
		1	5	4	3
	4	6	2	9	0
	4	7	8	3	3

6

		9	2	3	4
				3	3
	2	7	7	0	2
2	7	7	0	2	0
3	0	4	7	2	2

7

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

8

		1	6	2	0
				5	1
		1	6	2	0
	8	1	0	0	0
	8	2	6	2	0

9

		9	6	3	8
				6	2
	1	9	2	7	6
5	7	8	2	8	0
5	9	7	5	5	6

10

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

11

		7	1	9	5
				3	8
	5	7	5	6	0
2	1	5	8	5	0
2	7	3	4	1	0

12

		3	2	5	3
				3	8
	2	6	0	2	4
	9	7	5	9	0
1	2	3	6	1	4

13

		3	5	3	1
				3	6
	2	1	1	8	6
1	0	5	9	3	0
1	2	7	1	1	6

14

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

15

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

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