Please write all step of the formulas

Yates Corporation is a manufacturer of computer accessories. Ituses absorption costing based on standard costs and reports the following data for 2015 EEE (Click the icon to view the data.) There are no rate or efficiency variances. Actual operating costs equal budgeted operating costs. The production olume variance is written off to cost of goods sold. For each choice of denominator level, the budgeted production cost per unit is also the cost per unit of beginning inventory. Required