@Legendankit see the question is saying ,that initially you will be given three numbers
a)Minimum Fahrenheit value
b)Maximum Fahrenheit value
c)Step
now you need to start from Minimum Fahrenheit value and go to Maximum Fahrenheit value by taking step (each time) and convert the fahrenheit to celcius.
for example
let say
Minimum Fahrenheit value - 3
Maximum Fahrenheit value - 12
step-4
so we will start from 3 convert it to celcius than move 4 steps ahead i.e 7
convert 7 to celcius than move 4 steps ahead i.e 11
convert 11 to celcius than move 4 steps ahead i.e 15
we wiil stop here because 15 > Maximum Fahrenheit value