Itroll is right but OP's question sound like the latter case; I.e. in a macroeconomic level how does not infusing an economy with 5B affect the economy.

First of all it depends upon which economy you are talking about. Regardless of how you got it, if you were to spend 5B in Nepal or Bhutan, It will affect the country's GDP. As for US it will have a very minimal effect in a 13T economy.