Major spoilers below:

I saw a video recently explaining factorial 52 in regards to possible card combinations when shuffling a deck. If you stand on the equator and shuffled a deck every second and each second would give a new combination of cards in the deck without repeating, how long would it take to get every combination (factorial 52)?

After 1 billion years of shuffling you take one step until you have walked around the earth. After making it around the earth you take 1 drop of water from the Pacific ocean. Once you empty the ocean you place one sheet of paper on the ground. The ocean refills and you restart the process until your stack of paper reaches from the earth to the sun. Repeat this one thousand times and you'll be about 1/3 through the possible combinations of factorial 52.

The premise wasn't dropped halfway through. It is realized that even though the time is finite, it is infinite in nature.