What is the mechanical advantage of a screw with a pitch of 0.05 inches and a head with a diameter of 0.30 inches if you turn it with a screwdriver whose diameter is 1.5 inches? I think the equation to solve this would be:

Circumference witch is equal to 3.1416 x the Diameter witch is 1.5 inch. ÷ by the pitch witch is 0.05 inch.

S... the answer would be 94.248?

Correct me if i'm wrong because i really don't know.