I need an explanation on this whole chart. Not sure if I am correct and if not please could you recorrect and fill in

The master budget at Western Company last period called for sales of 226,700 units at $10.7 each. The costs were estimated to be $3.92 variable per unit and $226,700 fixed. During the period, actual production and actual sales were 231,700 units. The selling price was $10.80 per unit. Variable costs were $6.20 per unit. Actual fixed costs were $226,700. Required: Prepare a sales activity variance analysis. (Indicate the effect of each variance by selecting "F" for favorable, or "U" for unfavorable. If there is no effect, do not select either option.) WESTERN COMPANY Sales Activity Variance Flexible Budget Sales Activity Variance Master Budget S 2.479,190 $ 53,500F S 2.425,690 Sales revenue Less: Variable costs Contribution margin Less: Fixed costs Operating profits 908,264 1,570,926 888,664U F 19,600 2,406,090 S S 226,700 2,179,390 S 1,570,926 $