How do i get the 3.8565.... output?

1.1.3 infer the discount rate: Might not be easy for some of you \# Iterate using an indefinite while loop until your guess is close enough \# Set rate to be mid-point of low and high \# Compute the pv of cfs using the given rate \# If the absolute value of the difference between pv and 0 is less than 0.0001, then break out of the loop \# else update the high or the low depending on the value of pv [You have to think about this.]