Here’s what Labyrinth looks like:
I know it’s horribly drawn, but I drew everything myself. I’m such a bad artist that it’s a miracle that the key even looked like a key. And that glowing yellow/orange/red thing is a lantern.
The neatest thing about the calculator is that it has some built-in functions (anything from finding a number’s square root to finding the LCM of two numbers to finding the solutions to a quadratic equation.)
Here are some commands you can enter into the calculator and what they do: