At an activity level of 9,300 machine-hours in a month, Nooner Corporation's total variable production engineering cost is $766,320 and its total fixed production engineering cost is $191,040. What would be the total production engineering cost per unit, both fixed and variable, at an activity level of 9,600 machine-hours in a month? Assume that this level of activity is within the relevant range. (Do not round intermediate calculations.)