Minhyo by Geni

A deck was shuffled and spectator cut the deck into 4 piles, chosing one pile. 3 other piles will be squared and shuffle by spectator. Spectator count how many in their pile and remember the number. The magician deal the big pile one by one, spectator remember the card at their number position. Spectator deal their pile into 4 small piles, and add all values of 4 piles. The total number will be the position of their card