I will not accept Excel file. Also, I need to see all the work (formulas, etc), not just numbers, if you want a full credit for the assignment.
Your work must be submitted in a PDF or Word document format. So, I would advise you to do your work on a blank piece of paper, manually by hand (with black or blue ink pen). Make a “Circle” or a “box” on your final answers to indicate that those are your final answers. readable, looks professional, not sideways, and also not blurry.