Accelerator, Inc. manufactures a fuel additive called surge. Surge sells for $44 per container and the company produces and sells 80,000 containers per month. The company has established the following standards for each container of surge produced: standard quantity standard price direct materials 8 gallons $2.00 per gallon direct labor 1.25 hours $8.00 per hour The following information is available for surge for the month of September:

1. 645,000 gallons of chemicals were purchased at a cost of $1,161,000. 600,000 gallons were used in the production of surge during September.

2. 94,000 direct labor hours were worked during September at a cost of $759,520.

Calculate the direct labor efficiency variance for September. If the variance is favorable, enter an F after your number with a space between the number and the F (i.e., 10,000 F). If the variance is unfavorable, enter a U after your number with a space between the number and the U (i.e., 10,000 U). Do not use decimals in your answer.