Complex sentence: There followed twenty minutes further loud argument after which he came back to the sahibs, grinning--they were to be released for payment of seven rupees which Ang Tharkay had been arguing down from ten.
Split into simpler sentences: There followed twenty minutes argument after which he came back to the sahibs, grinning. They were to be released for payment of seven rupees which Ang Tharkay had been arguing down from ten.