Instructions:
Fill the multiplication square so that the center fields are the results of the multiplication of the fields in the corners, which are adjacent central field.
Example
6
30
X
21
3
Solution
6
42
7
30
X
21
5
15
3
6 . 7 = 42 | 7 . 3 = 21 | 5 . 3 = 15 | 6 . 5 = 30