I don't understand this question 5,925,020 = 5,000,000 + + 20,000 + 2O

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500