Variables, input and output in programming using visual basics.

cost of electricity (in dollars) =100,000wattageofdevicehoursusedcostperkWhincents where kWh is an abbreviation for "kilowatt hour." The cost per kWh of electricity varies with locality. On April 1, 2015, the average cost of electricity for a residential customer in the United States was 12.65 per kWh. Write a program that allows the user to calculate the cost of operating an electrical device. Figure 3.21 calculates the cost of keeping a light bulb turned on for an entire month