At an activity level of 8,700 machine-hours in a month, Golden Corporation's total variable production engineering cost is $744,720 and its total fixed production engineering cost is $181,560. 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 th? Assume that this level of activity is within the relevant range. (Round intermediate calculations to 2 decimal places.)