Computer Science help!?

1) What is 25 mod 7? What is 132 mod 111? What is -12 mod 5? 2) Compute the GCD of 410 and 226 by using the recursive GCD method. 3) What is the modular multiplicative inverse of 7a’ mod 17 = 1? 4) Through Fermat’s Little Theorem, show whether or not that 3591 a prime number.