I was working as a stockboy in a supermarket and when we had to fill the milk cooler people would bust open a 12 pack of milk cartons and put them in one by one.
On my first day I just placed the 12 pack in the cooler and cut the plastic off on one side with my box cutter and yanked it from under it and the look of the store manager and the other employee who was training me was pure bewilderment.
From that day everyone did it my way.
Had a similar experience. Previous dude took days to come up with a report. I spent a week or two on it, and any monkey can copy paste values and generate the same report in under a hour.