BITCOIN CRYPTO RIDDLE-I failed and most will fail too!

You're going to a friend's house and want to give him some BITCOINS. On the way to the house, you cross 5 bridges. At each bridge, you must pay a toll of half of your BITCOINS to the owner. But they are all very nice and give you back a BITCOIN from what you give them. How many BITCOINS must you start with to give your friend 2 BITCOINS?

I failed this badly, so, don't feel bad if you don't get it right!

Have some fun and see if your friends will get it right too.