Please help me in this question

For a monopolist's product, the demand function is p=85-0.05q and the cost function is c=500+25q, where q is number of units, and both p and c are expressed in dollars per unit. At what level of output will profit be maximized? At what price does this occur, and what is the profit? The profit will be maximized at an output of ????? units. (Simplify your answer. Type an integer or a decimal.) The profit will be maximized at a price of $ ????? per unit. (Simplify your answer. Type an integer or a decimal.) When maximized, the profit is $ ????? (Simplify your answer. Type an integer or a decimal.)