Add a に to every and you get for every. This means something happens at intervals of a certain time frame or milestone, like once every year, month, day, etc.!

Note that this is very frequently written in hiragana, but you'll encounter the kanji version as well, especially when it follows a number.

This uses the kun'yomi reading of 毎, which you haven't learned yet, so here's a mnemonic to help you:

For every kanji you burn, you go to (ごと) Tokyo Disneyland as a reward. It's a bit of an expensive habit, but I think you deserve it.