In multiplication what equals 90

Verified Answer :

109
2
45
330
5
18
6*15

the square of 90 is 9.48683298051 because

9.486832980519.48683298051=90

other eqautions are 

1
90

245

3
30

422.5

5
18

615

7
12.8571428571

811.25

9
10