Write a Python program for the following

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Python

You are given the number of units of electricity consumed, you have to write a program to calculate the final electricity bill (in Rs) as per the following slabs.

1 - 65 units: 50 paise per unit
66 - 200 units: 65 paise per unit
201 - 475 units: Rs. 1.2 per unit
Above 475 units: Rs. 2 per unit
Additionally a surcharge of 25% is levied on the total bill. Take the number of units consumed as input from the user.



Example: U=225 units

Total bill= 65*0.5+135*0.65+25*1.2= 150.25 Rs

Final bill = 150.25 + 25% of 150.25

= 150.25 + 37.5625

= 187.8125 Rs

What I have tried:

I don't know to write finalbill as summation of total bill can anyone help me with this?

U=int(input())
def TotalBill(U) :
    if (U <= 65):
        return U * 0.5
    elif (U <= 200):
        return ((65 * 0,5) + (U - 65) * 0.65)
    elif (U <= 475):
        return ((65 * 0.5) +(135 * 0.65) + (U - 200) * 1.2)
    elif (U > 475):
        return ((65 * 0.5) +(135 * 0.65) +(275 * 1.2) +(U - 475) * 2)
    else :
        return 0

print(TotalBill)
FinalBill = "TotalBill" + 0.25 * TotalBill