By any standards, the overall package is a staggering pot of money — by far the largest in the history of crisis relief for industries and local governments. About $425 billion is to be used by the Treasury Department to support the Fed’s emergency lending programs. These include loans for small and medium-sized businesses. Because the companies, states and cities are deemed likely to repay the loans, the Fed is able to to leverage the money into up to roughly $4 trillion in actual lending.