Please post the calculations as I want to learn how to get the answer

Instructions Complete the following problems. Your work needs to be presentable and legible. Any incomplete work will automatically receive zero points. PART I Galley Industries can produce 100 units of a necessary component part with the following costs: Direct Materials $30,000 Direct Labor 13,000 Variable Overhead 32,000 Fixed overhead 12,000 If Galley Industries purchases the component externally, s3,000 of the fixed costs can be avoided. What would be the incremental Net Income if the 100 units are purchased for $750 each