The Canada Revenue Agency (CRA) has determined that during each of the next 12 months it will need the numbers of supercomputers given below. To meet these requirements, the CRA rents supercomputers for a period of one, two, or three months. It costs $100 to rent a supercomputer for one month, $180 for two months, and $250 for three months. At the beginning of month 1, the CRA has no supercomputers. Determine the rental plan that meets the requirements for the next 12 months at minimum cost. You may leave fractional rentals as is in your optimal solution.

please provide a detailed step-by-step answer including the column headers and row numbers and the formula and solver used in the process. thx

A B C D E F G H | J K L M 1 IRS data 3 Month 1_ Month 2_ Month 3 Month 4_ Month 5_ Month 6 Month 7 Month 8 Month 9 Month 10 Month 11_ Month 12 4 Requirements 800' 1000 600 500 1200 800 800 600 400 500 800 600