When you have millions or years, who cares how long it would take. It will get done.
Oh yeah, the Liberal philosophy, just keep printing money. Millions of years is not enough. Billions of years is not enough. Trillions of years is not enough. Quadrillions of years is not enough. Quintillions of years is not enough. Sextillions of years is not enough. Septillions of years is not enough, even if you are British.
Shuffle a deck of cards fairly. Now check to see if the deck is in order with aces to kings for each suit and the suits in club, diamonds, hearts and spades sequence. Keep shuffling and checking until the deck is in the described order. There are
P.S. Even if we used Planck Time the chore would involve on the order of 20,000 ages of the universe in the calculation.