Iam dividing 16 and 4,856, i am getting 303 r 8 but, a calculator states that it is 303 r 5. what am i doing wrong?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

Need same math paper but the back now i hope your able to read it cleary i need with hw

Express -5 2/5 as an improper fraction.