Blind man, equal cards Riddle

Puzzle of the Day 2051 : Blind Man, equal cards Riddle

Puzzle 2051 - Blind Man Equal Cards Riddle

A blind man is handed a deck of 52 cards and told that exactly 10 of these cards are facing up.
How can he divide the cards into two piles, not necessarily of equal size,
with each pile having the same number of cards facing up?