Bitcoins are created in a process that goes something like this: people ("miners") find solutions ("blocks") to a computationally intensive mathematical problem. The miners who find the latest block may turn that block into brand-new bitcoins, that didn't exist before. This is the "reward" for finding a block. Over time, the amount of bitcoins created from each block decreases. Specifically, the reward for finding a block halves every 210,000 blocks. At first, each block could be used to create 50 bitcoins. After 210,000 blocks had been found, the next 210,000 blocks could only be used to create 25 bitcoins each. and so on. (a) Assume that bitcoins can be halved indefinitely, and recorded with perfect accuracy. How many bitcoins could possibly come into existence from mining blocks?