Factory Overhead Controllable Variance

Bellingham Company produced $15,000$ units of product that required $4$ standard direct labor hours per unit. The standard variable overhead cost per unit is $$0\mathrm{.}90$ per direct labor hour. The actual variable factory overhead was $$52,770.$ Determine the variable factory overhead controllable variance. Enter a favorable variance as a negative number using a minus sign and an unfavorable variance as a positive number.