wait a minute i figured it out. heres a clue make sure to check the emails for new ones and do something to break down the computers in locked room.
your welcome and there should be plenty of ammo. there should be more outside. just go through the window. there should be enough ammo to kill larry, enter the digits on the calculator and break the computers. once the computers are broken an email will show up and the title should be please read and it will have the code for the door.