Super Mario Maker can help you with your homework, thanks to one intrepid level designer.

The Cluttered Chaos-Calculator stage by Reddit user Helgefan is a literal calculator. It only does simple addition, but there doesn't appear to be anything simple about how it accomplishes the feat.

Only the beginning of the stage is interactive, with players taking Mario through columns to select the two numbers they'd like to add. You can skip learning how to make that work yourself by watching our video playthrough.

The rest seems, at first, like any number of self-completing Super Mario Maker levels in which the player must not move. However, the automatic flinging of shells and breaking of blocks actually hide a maddening maze of logic gates to produce a result.

"Simple adding machines have been created in the past with Super Mario Maker," Helgefan pointed out in their complex breakdown of the level, "but to my knowledge this is the first one with a decimal conversion and proper display of the result."

The user further posted a massive image of the stage, with details on how its logic works, to Imgur. If you'd like to try and decipher the one-time-use machine, more power to you. In the meantime we'll try to wrap our heads around using Shell Helmets as binary states.