Cullumber Limited purchased four articulated robots on account on May $1,2024,$ at an invoice price of $$506,000.$ On May $2,$ it paid $$4,000$ for delivery of the robots. A one$-$year, $$5,500$ insurance policy on the robots was purchased on May $3.$ On May $30,$ Cullumber paid $$10,000$ for assembly, installation and testing of each robot on a production line. The robots started operating or were ready for use on July $1.$ Calculate Cost of Robots