At an activity level of 8,500 machine-hours in a month, Falks Corporation's total variable production engineering cost is $708,900 and its total fixed production engineering cost is $168,210. What would be the total production engineering cost per machine-hour, both fixed and variable, at an activity level of 8,900 machine-hours in a month? Assume that this level of activity is within the relevant range. (Round intermediate calculations to 2 decimal places.)