Fixed a little bug

Indicators now work, if the player gives an answer

You forgot to make the correct/wrong indicators work on the math machine

Fixed the 1+0 problem where the answer gives zero Fixed balloons setting answers without dragging Fixed an issue where you could drag a balloon into the machine after answering to make the answer correct (Balloons can no longer be dragged after already getting an answer)

This literally crashed my app when I played for the first time

Cool!