At an activity level of 8,400 machine-hours in a month, Curt Corporation's total variable production engineering cost is $732,480 and its total fixed production engineering cost is $180,400. What would be the production engineering cost per machine-hour, both fixed and variable, at an activity level of 8,800 machine-hours in a month? Assume that this level of activity is within the relevant range. (Do not round intermediate calculations.)