I just need help doing the program In The ada programming language

In this assignment you are asked to solve a problem using 3 different programming languages: Python(33.33%). Ada (33.33%) and VB(33.33%). You are required to find a compiler for each of the mention languages and test them on your own machines. In this assignment, you are asked to solve a problem using 3 different programming languages: Python (33.33%), Ada (33.33%), and VB (33.33%). You are required to find a compiler for each of the mentioned languages and test them on your own machines. Given a binary String as input, composed of 0's and 1's, give the decimal value for the input. Given a binary string, b, of size, n, indexed 0, 1, 2,..., n - 1. Denote character's integer value of b as b_ such that i = 0, 1, 2, - n - 1. The decimal value, d = b_n - 1 times 2^+ b_n - 2 times 2^1 + + b_0 times 2^n - 1