You describe https://flow5.tech/flow5.html (Im not directly familiar, but it is an extension of xflr5 which I have used). Gives you the lift/drag/moment curves, and stability coefficients of a fixed wing drone/rc airplane
Circulation of cash is very low, only 3% of trensfered money is in cash according to this 2019 study https://www.norges-bank.no/en/news-events/news-publications/... Since then, with COVID where many stores refused cash payments, so it may have decreased further.
The 3% value (if I am reading data correctly) is because of the pandemic - the usual recent value would have been closer to (rounded) 10%, which received a blow in the 2020 frenzy; the "2019" study covers complete 2019 but includes 2020 data.
About the special numbers of Sweden and Norway: this is what happens when living in Sweden and Norway, you get the false idea that reality is like Sweden and Norway look.
