Very, very easily. I could spend $50m in a day, once you see how rich people spend money it changes your outlook on life.
Apart from the usual yachts / private jets / all that nonsense there's the daily stuff. When income increases, so does the cost of outgoings. We spend a couple of quid on bread and milk, they spend £15 on the same because it's all organic fresh fairtrade blablabla that's bought in by the staff, not them.
I spent two years working directly for a chap worth £5b. Yes, billion with a B. The stories I could tell you would blow your mind.
Here's one - I was chatting to his PA one day who was flapping around the office as if the world was collapsing. I asked her what was up and she told me he missed his flight. I didn't understand how this could be such a drama so simply asked if she couldn't book him a new flight, just ring BA or whatever. How wrong was I. He had a slot booked for his own private jet at the airport. The jet was on the tarmac ready to go, fully fuelled, pilot and crew on board, food and drink, the lot. The slot cost £15k and it was a 15 minute slot. This means that ATC is on standby for 15 minutes and he owns the runway for that duration. He missed his slot which meant he had to pay another £15k to the airport for a new one, which wasn't available, so he had to buy a slot from someone else for £50k. Yes, there are people out there who book slots with no intention of flying just so they can profit off this kind of thing. He shrugged this off as I would putting out half a fag. It was absolutely nothing to him, pocket change. That's how these people work, money is absolutely not on their radar at all.