Transcontinental Pipelines is considering a technical process that is expected to reduce maintenance costs by $72,000 . What is the maximum amount of money that could be invested in the process to be economically feasible if interest is 10.9% compounded semi-annually?

Answer: The maximum amount of money that could be invested is $643,028. (Round the final answer to the nearest dollar as needed. Round all intermediate values to six decimal places as needed.)

NOTE*: i would like to know how to get to that answer through a financial calculator in BGN MODE. If it is not possible to calculate through financial calculator then formulas are okay too! (simple annuity)