Yearly Turns (B7) I make 365 / B6, ie 365 / 34 to be 10.735 rather than 10.74
That would make Annual ROI to be 10.73 * 0.444 which via a calculator is 47.69%

Looks to me like the report is wrong.

By the way in A9 you've spelt Invoice as "Inovoice"