Need help solving a-d with (possibly showing calculations please. Thanks in advance.

Ferry Chemical uses a standard cost system to account for the costs of its production of Chemical X. Standards are 19 gallons of materials at $110 per gallon and 15 hours of labor at a standard wage rate of $17. During September, Ferry Chemical produced 2.700 gallons of Chemical X. Ferry Chemical purchased and used totaled 3,620 gallons at a total cost of $400,180. Payroll totaled $307730 for 25,680 hours worked. a. Calculate the direct materials price variance. (Do not round your intermediate calculations. Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Price Variance b. Calculate the direct materials quantity variance. (Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (i.e., zero variance).) Quantity Variance c. Calculate the direct labor rate variance. (Do not round your intermediate calculations. Indicate the effect of variance by selecting "Favorable", "Unfavorable", or "None" for no effect (.e., zero variance).) Rate Variance d. Calculate the direct labor efficiency variance (Indicate the effect of variance by selecting "Favorable". "Unfavorable", or "None" for no effect (.e., zero variance).) Efficiency Variance