Your calculations are well off aswell deeman. Your correct in saying banks lend money from what is deposited by their customers, however this can be leveraged out at 10-1.... so for instance a term despot can get split into 10 different loans, while the bank is only paying out interest on the original principal deposited, however collecting from each additional loan that deposit has allowed them to issue- under fractional reserve banking... If everyone went into a bank to withdraw their money, the banks simply couldn't pay out.
