Cumulative voting is like when you and your friends are all picking a place to go for lunch, but instead of just picking one place, everyone gets to pick a few different places they like.
For example, if there are 10 people voting and they all get to pick 3 places they like, there would be a total of 30 votes given out. Each person gets to put their votes towards one place or split them up between multiple places.
This allows for a more fair representation of everyone's opinions, because even if someone's top choice doesn't win, their other choices still have a chance.
In real-life business and political situations, cumulative voting might be used to allow minority groups or parties to have a better chance at getting a say in important decisions.