I built probably my last tab, the Loan payoff Calculator. I had a LOTTTT of bugs with my formula and the overall persona of the concept. There was a confusing /$ display in a few places but I fixed it after some trouble. Apparently streamline treats $ the same way as st.write/st.errors/st.success. I also ended up building the amortization loop with monthly splits for fixed payment and interest based on the remaining balance. Im probably going to spend some time trying to turn this into a final website type project, which I’ve never done before.