On the Subject of Letter Math

These numbers don't look right to me.

This module consists of a display with a lettered equation on it and six numbered buttons. Press the correct button to solve the module. Pressing the incorrect button will result in a strike.

To find the correct button, convert the letters on the display into numbers (A=1, B=2, etc). Use these numbers to solve the equation. To solve the module, press the button which matches the solution of the equation.