It doesn't work like that. The information being hashed is the hash of the merkle tree root of all the transaction in a block, and a nonce. They are hashing dat

It doesn't work like that. The information being hashed is the hash of the merkle tree root of all the transaction in a block, and a nonce. They are hashing data in a very specific format, not every possible bytes sequence. Also, the proof-of-work is completed when you find a hash that begins with a specified number of zeros, and not when you reach a specific hash.