Please show formulas so I am able to complete similar problems. THANKS!

Custom Shirt Company uses a special fabric in the production of dress shirts. During August, Custom Shirt purchased and used 12,300 square yards in the production of 4,000 shirts at a total cost of B8,806,800. (B stands for the Thai baht. There are roughly 30 bahts to a U.S. dollar.) The standard allows three yard(s) at B710 per yard for each shirt.

Calculate the material price variance and the material quantity variance.

Actual cost incurred: Actual Inputs X Actual Prices

Answer: B?

Flexible Budget Based on Actual Inputs X Standard Prices

Answer: B?

Flexible Budget Based on Standard Inputs Allowed for Actual Outputs Achieved X Standard Prices

Answer: B?