I think it's meant to play with your expectations. Normally someone's take being posted is to show them being confidently stupid, otherwise it isn't as interesting and doesn't go viral.However, because we're primed to view it from that lens, we feel crazy to think we're doing the math correctly and getting the "wrong answer" from what we assume is the "confident dipshit".

There's layers beyond the superficial.

As most memes are.

Not even a meme.

More like a sad realization of the state of (un)education in some parts of the so-called civilized world.
You laugh not to cry.

It's engagement bait.