I spent a week writing an Excel macro for my old boss (hardware engineers tend to use Excel for everything!) that did literally a full day's worth of tedious wo

I spent a week writing an Excel macro for my old boss (hardware engineers tend to use Excel for everything!) that did literally a full day's worth of tedious work in about one second. I never did get an estimate on the savings, but he uses this macro whenever there's a problem in manufacturing. So that's one senior engineer's day of work, plus one day of manufacturing doing nothing, saved each time.