Sir, could you explain it to me step by step so I can see what I did wrong? I don't know how to get to the answer starting with 35You used DarnItJimImAnEngineer's method, but DarnItJimImAnEngineer had overlooked the final macaroon given to Anouk, so you both arrived at the solution of a slightly different problem.
Now that you know your mistake, you can start afresh. Did you notice that "at least" was italicized in the original question? Why was that done? Why are you expecting calculation? Or rather, why do you think calculations are important in obtaining the answer?