its not -64166 and -72208 please help

Bilboa Freightlines, S.A. of Panama has a small truck that it uses for local deliveries. The truck is in bad repair and must be either overhauled or replaced with a new truck. The company has assembled the following information (Panama uses the U.S. dollar as its currency): If the company keeps and overhauls its present delivery truck, then the truck will be usable for eight more years. If a new truck is purchased, it will be used for eight years, after which it will be traded in on another truck. The new truck would be diesel-fuelled, resulting in a substantial reduction in annual operating costs, as shown above. The company computes depreciation on a straight-line basis. All investment projects are evaluated using a 16% discount rate. Click here to view Exhibit 10-1 and Exhibit 10-2, to determine the appropriate discount factor(s) using tables. Required: 1-a. Determine the present value of net cash flows using the total-cost approach. (Negative amounts should be indicated with a minus sign. Round discount factor(s) to 3 decimal place.)