This topic is really confusing for me, so if you can please describe what you're doing in as much detail as possible I'd really appreciate it.

Consider the algorithm for iterative fast exponentiation on input x = 3, y = 13, and n = 7. The mod operations are not applied to the variabler. For exponent y = 13. (r mod 2) = 1 at the beginning of iterations 1, 3, and 4. 1) At the beginning of the first iteration s = x = 3. What is the value of s at the beginning of the second iteration? Check Show answer 2) What is the value of s at the beginning of the third iteration? Check Show answer 3) What is the value of s at the beginning of the fourth iteration? Check Show answer 4) Starting with p = 1, the value for p is multiplied by s mod 7 in each iteration in which (r mod 2) = 1. What is the final value for p? Check Show answer Consider the algorithm for iterative fast exponentiation on input x = 3, y = 13, and n = 7. The mod operations are not applied to the variabler. For exponent y = 13. (r mod 2) = 1 at the beginning of iterations 1, 3, and 4. 1) At the beginning of the first iteration s = x = 3. What is the value of s at the beginning of the second iteration? Check Show answer 2) What is the value of s at the beginning of the third iteration? Check Show answer 3) What is the value of s at the beginning of the fourth iteration? Check Show answer 4) Starting with p = 1, the value for p is multiplied by s mod 7 in each iteration in which (r mod 2) = 1. What is the final value for p? Check Show