I just read that for every human on Earth, there are 17 million flies - just flies. Anyway there are important questions here - first, location matters! I'm just going to assume a temperate climate, I'll bet it's more in tropical climates, also are we talking intentionally with the rolled up magazine or ALL deaths directly caused by you (like running over beetles in the driveway) assuming all deaths, I'm going to say at most somewhere between a couple per day and a couple per week, let's say 500 a year just for easy math, times let's say 20 years and we've got 10,000 insects smushed