[aerio]

You don't have to though. Base facrorio does not require any spreadsheets or math (other than production lines for efficiency, but that's kind of the nature of the game.)

It's a mod, and so not required and already something you decided to optionally add to your game.

[BlueTemplar]

And for production lines, you have plenty of mods that can do the math for you : Helmod / Factory Planner, Actual Craft Time, Rate Calculator...