Use Excel or Wolfram | Alpha to find the expected value and the optimal strategies for the

Question:

Use Excel or Wolfram | Alpha to find the expected value and the optimal strategies for the Two-Finger Morra game in Exercise 25,
Refer to Exercise 25,
Reven and Coddy play a game in which they each simultaneously present a single hand with one or two fingers extended. Reven wins if the total number of fingers extended is even. Otherwise, Coddy wins. The loser pays the winner the number of dollars equal to the total number of fingers extended?