IF formula less than greater than and between 2 value

Hi Experts,

I need to help in formula in cell B3, When I changes the amount in Cell B1 then the calculations in B3 needs to calculate according to above formula.

Criteria:
if amount is less than B5 = 0
If amount is between B5 and B6 = (amount - B5) x c2
If amount is greater than B6 = B6 x c2


Thanks in advance