The game is terrible. Click the ? in the lower right and take a screenshot of the images.
You have 4 boxes with symbols, each representing a value 1, 3, 5, 11.
You must load between 1-4 boxes to equal the value in the top left.
Once you load the number of boxes that equal that value click done.
Example
34 = 11 + 11 + 11 + 1
28 = 11 + 11 + 5 + 3
9 = 3 + 3 + 3, or 5 + 3 + 1
The -50 penalty for one wrong is extremely hefty. since the cards are pricey I wait till I score 50 and wait on the last one before answering to make sure I get it correct to end the day.