Using Excel Slover!!!!!

Westside Electronics sells 12,000 capacitators per month to its customers. The capacitators can be produced at three different plants. The production capacity, fixed monthly setup cost, and unit variable production cost of a capacitator at each plant are given down below. The fixed cost of for a plant is incurred only if the plant is used to make any capacitators. If a plant is used at all, at least 3000 capacitators per month must be produced at the plant. Determine how to minimize the company's monthly costs of meeting its customers' demands.

please provide a detailed step-by-step answer including the column headers and row numbers and the formula and solver used in the process. thx

A B C D E F G I J 1 Capacitor data 2 3 4 Fixed cost 5 Variable cost 6 Production capacity 7 Plant 1 Plant 2 Plant 3 $80,000 $40,000 $30,000 $20 $25 $30 6000 7000 6000 Demand 12,000 Min quantity to produce if a plant is used 3000 8 9