At stage 2 (1 year from now) of the decision tree, it shows that if a project is successful, the payoff will be $52,917 with a 56% chance of occurrence. If unsuccessful, the payoff is $-21,000. The cost of getting to stage 2 is $41,693. The cost of capital is 15%.

What is the NPV of the project at stage 1 (year 0)

(the correct answer is -23,960 but I need to understand the steps to get that answer)