You’ve made it this far. Aren’t the slightest bit curious?
Who cares what is inside the letter, you’re rich baby! Before handing it over to Lachemi, you get him to e-transfer you the money. The transaction is approved.
Before he can open it or say anything, you get up and get the heck out of his office, fast. You are the proud new owner of a helluva lot of money! Congratulations champ, don’t spend it all at Oakham Café!