Problem $2$: Determine the drag coefficient $($fill in the blanks$)$

A $2780$ lb car is traveling at sea level at a constant speed. Its engine is running at $4500re\frac{v}{m}in$ and is producing $175ft-lb$ of torque. It has a drivetrain efficiency of $90\%,$ a drive axle slippage of $2\%,15-$in radius wheels, and an overall gear reduction ration of $3$ to $1.$ If the car's frontal area is $21\mathrm{.}5f{t}^2,$ what is its drag coefficient? Pay attention to the units and write your answer in two decimal places, unless otherwise specified. Please show details when solving