I ran this code.Then it displayed the follwing in the console.

Traceback (most recent call last): File "", line 13, in NameError: name 'r' is not defined

import mathp = int(raw_input("Please enter deposit amount: \n"))
i = int(raw_input("Please input interest rate: \n"))
t = int(raw_input("Please insert number of years of the invesment: \n"))
interest = raw_input("Do you want a simple or compound interest ? \n")A = p(1+r*t)
B = p(1+r)^tif interest == "simple":print int(float(A))
elif interest == "compound":print int(float(B))

There were multiple errors and indentation problem ;I commented them where you made mistakes:

p = int(raw_input("Please enter deposit amount: \n"))
r = int(raw_input("Please input interest rate: \n")) #rename i to r
t = int(raw_input("Please insert number of years of the investment: \n"))
interest = raw_input("Do you want a simple or compound interest ? \n")A = p*(1+r*t) #multiply p with ()
B = p*(1+r)**t #same as B#** is powerif interest == "simple":print (float(A)) # you dont need to cast the float again to int
else: #since there is no other conditions it's obvious to print compound print(float(B))# you dont need to cast the float again to int