Well, it depends. If one were to bump'n'dunk a freighter in Uedama this could be accomplished in less then 5 minutes.
Even more so if you manage to chat-PVP some more ISK out of the bumpee before the gank. Aaaaaand even more if you sell the freighter pilot a plastic wrap full of assembled containers that matches the size of the one that dropped (half of the collateral works great).