New York Times: That is roughly how much money investors have lost on paper as the oil giant’s share price has plunged. And, in the grim calculus of the spill — the lives and livelihoods lost, the barrels of oil spewing into the Gulf of Mexico — the financial toll keeps mounting, too. BP is so big, and its stock is so widely held, that its troubles are being felt throughout the investment world. Large insurance companies in Britain, big money management companies in the United States, …