please help me step by step with explanations where the numbers came from as well.

Mia Wiz sells computers. During May, it sold 400 computers at a $1,000 per unit price. The xed budget for May predicted sales of450 computers at an per unit price of $960. A0 = Actual Quantity SQ = Standard Quantity AP = Actual Price SP = Standard Price 1&2. Compute the sales price variance and the sales volume variance for May. Identify it as favorable or unfavorable. (Indicate the effect of each variance by selecting favorable, unfavorable. or no variance.)