Sailmaster makes high$-$performance sails for competitive windsurfers. Below is information about the inputs and outputs for one model, the Windy $2000.$

Units sold $1,224$

Sale price each $ $1,707$

Total labor hours $46,681$

Wage rate $ $12$ per hour

Total materials $$60,500$

Total energy $ $4,012$

calculate the productivity in sales revenue$/$labor expense.