Pressure wash estimate? ive been asked to pressure clean a 1 and a half...

ive been asked to pressure clean a 1 and a half story house, how much to charge?
Answers:    we do this adjectives the time it is 225 no drive way included ull be done contained by about an hour and ahalf. if they want drive agency it would probaly be about 75 more
Take measurements, distance only, make the addition of 15 feet, multiply by 58, divide by 2, append your gas and other costs, and you should get an answer