Matthew 17:27 'Notwithstanding, lest we should offend them, go thou to the sea, and cast an hook, and take up the fish that first cometh up; and when thou hast opened his mouth, thou shalt find a piece of money; that take, and give unto them for me and thee.'
This was quite a miracle. Not only was the money supplied for their taxes, but it was the exact amount needed, and it was from the first fish that was caught.
Although this sets the precedent that God can supply our needs in a miraculous way, it's important to remember that God doesn't counterfeit money. He didn't create money in the fish, but rather he had the fish miraculously find and swallow the exact Roman coin that Peter needed. It's a mistake to just pray and then wait on God to rain the money down from heaven.
As Luke 6:38 says, God uses men (and sometimes fish) to give finances to us. He can do it in a very unexpected, supernatural way but it will involve people and existing currency. We need to believe the Lord hears and answers our prayers and then pray for the people He's going to use to deliver the answer. This could be our employer, the person who buys our goods, or any number of people.
The Lord also blesses what we set our hands to do. When in need, we should seek God's direction for something to set our hands to and then trust Him to bless it and multiply the results of our work. But one hundred times zero is zero. Many people have missed their miracle because they never took that first step of faith and used what they had. God can give you a creative idea today that will bless you and make you a blessing to others. Seek and you will find.