Can you please help me with all these questions and thank you

Exercise 4.11. Compute each of the following by hand: (1) 44/3 (2) 44%3 (3) (72)/5 (4) (72)%10 (5) 11/1 (6) 11%1 Exercise 4.12. Prove each of the following statements. You may assume that the Quotient Remainder theorem is true. (1) If x%5=3 and y%5=2 then xy%5=1. (2) For every integer x,x2+x is even. (3) For every integer x,x(x+1)(x+2) is divisible by 3