WATCH TO END child magic tricks 😲🙊👏👏#magic

A spectator is instructed to think of any card (other than the joker). The magician then gives the following instructions:

Take the card's face value (with aces counting as 1 and royal cards counting as 11, 12 and 13 respectively)
Double it.
Add 3.
Multiply by 5.
If the card the spectator is thinking of is a spade, subtract 1.
If the card the spectator is thinking of is a heart, subtract 2.
If the card the spectator is thinking of is a club, subtract 3.
If the card the spectator is thinking of is a diamond, subtract 4.
The spectator then tells the magician the number the spectator is now thinking of. The magician then names the card.