The firm has two labor inputs: senior and junior laborer. The standard mix is 1 senior laborer hour per 2 junior laborer hours. Three total hours is the standard hour of input for a single finished goods unit. Senior laborers cost $21 per hour, and junior laborers cost $14 per hour.

The firm's actually completed 10,991 finished goods units and used 34,004 total labor hours.

What is the firm's yield variance?

NOTE: only input a number, without indicating favorability (for simplicity, I've made sure that the relevant variance equation leads to a positive number). Round final answer to cents if necessary.