How would i calculate the desired ROI per unit based on this information:

 $65Per Unit Direct Materials

$48.00Per Unit Direct Labour

$16.00Per Unit Variable Manufacturing Overhead

$12.00Per Unit Variable Selling Expenses

$250,000Fixed Manufacturing Overhead

$55,000Fixed Selling and Admin

16%ABC's Desired ROI

$8,250,000Invested Assets

4,000Units per year is the expected Production and Sales.