At an activity level of 10,000 machine-hours in a month, Nooner Corporation's total variable production engineering cost is $837,000 and its total fixed production engineering cost is $276,150. What would be the total production engineering cost per unit, both fixed and variable, at an activity level of 10,500 machine-hours in a month? Assume that this level of activity is within the relevant range. (Do not round intermediate calculations.)