PLEASE HELP simplify 10^6/5^3•2^3 (i added a picture so you could see the equation better)

For how answer my question this will be the last question can you answer in math subject

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?