In the sense measured in economics, only if the product at the end of the day is sold for the same nominal amount of dollars as before. It doesn't matter how many features or lines of code or bugs or anything like this you produced - it matters how much revenue your work produced.

So, if the product isn't selling any more expensive even though you're adding ~8 times more features, or if you're still getting paid for the full 40 hours even though you only really work 5, then economic productivity hasn't actually increased.