How do I detect if the input number is within a certain range?

How do I detect the upper and lower limit of a number if the input is within a certain range?

For example:

input_Num = 3371;
i = 20000:-2500:2500;

How do code so that I am able determine within which range of i is input_Num? Which in this case, the upper is 5000 and lower is 2500.

Thank you very much!

Answer 1

[David Hill]

f=floor(input_Num/2500);
lower=f*2500;
upper=(f+1)*2500;

[Michael Arvin]

Thanks!