The table shows the educational attainment of the population of Mars, ages 25 and over, expressed in millions. Find the probability that a randomly selected martian, aged 25 and over has not completed four years(or more) of college.

Â	Years of High School		Years of College		Â
Â	Less than 4	4 only	Some (less than 4)	4 or more	Total
Male	14	29	21	18	82
Female	15	26	24	24	89
Total	29	55	45	42	171

The probability is {  } (Type an integer or a simplified fraction.)