300 million dollars

Just had a lengthily conversation involving math and cubic feet calculations with my coworkers about if we could fit 300 million dollars in the lobby in 100 dollar bills. After some Googling, improvised measurements and botched math, we concluded that we could fit approximately 105 million dollars inside the lobby in 100 dollar bills. It made me feel like we were a crew of theorizing You Tubers. I wonder if anyone has actually talked about this on You Tube.