challenge_12 (150 pts)

You are a cryptograph analyst for The Campeonador, godfather of an important drug cartel. He is in competition with Marquandier, a member of the french connection, in the auction process for 500 kg of pure heroin. You have information through different sources that Marquandier has transmitted his ultimate bid to the supplier. If you want to take over the deal you have to discover the amount of his last offer through this audio file he sent to the supplier.

Required files: