I am having trouble with this problem, may someone please help me.

At the beginning of the year, Blue Bird Manufacturing estimated that its annual variable factory overhead would be $405,000, and its fixed factory overhead would be $891,000. The company's payroll consisted of 15 direct labor employees, and each was expected to work 1,800 direct labor hours. Blue Bird applies overhead to products based on direct labor hours. Each finished unit produced by the company is anticipated to require three direct labor hours. Actual production and cost information for the year is as follows: Total units produced 8,900 Actual variable overhead $ 395,000 Actual fixed overhead $ 910,000 Actual labor hours (a) Compute the variable overhead variances.. (b) Compute the fixed overhead variances. 26,900 (a) Variable overhead variances Actual cost of variable overhead $ Standard hours - Standard rate per hour $ - Standard cost of variable overhead $ - Actual use at standard cost $ - Total favorable variable overhead variance $ - Variable overhead spending variance $ - Variable overhead efficiency variance $ - $ - (b) Fixed overhead variances Actual cost of fixed overhead Standard hours - Standard rate per hour $ - Standard cost of variable overhead $ - Budgeted fixed overhead $ - Total unfavorable fixed overhead variance $ - Fixed overhead spending variance $ - Fixed overhead volume variance $