HP sold various models of calculator such as HP20b
, HP17bII among others. Each of them has its own features and attributes. Some are even used by agents who are selling loans and involved in banking. It can be said that this tool is useful when it comes to calculating interest and different premiums. It can be said that financial calculator is something that give fast and precise results. This tool is definitely something that uses the right formulas in solving specific equation. For this reason, you can be assured that you will be getting the correct answer.