Margill | Finance Software for professionals. Okay, math was never my best subject in school. I was an English major, and the last day of my last math class was a celebration. Then, after law school, I discovered that in addition to being required to be a psychologist, lawyer, social worker, business person, executive, maintenance specialist, and a host of other jobs, I had to be a finance guy. Interest calculations, complex amortization schedules, knowing the statutory rates of interest on judgments, and many other calculations that were beyond my skill set. Enter Margill Law, which is a product that should be on every lawyer's computer. Automatic updates of State and Federal interest rates, instant calculations of the most complicated financial transactions, and all you have to do is enter the data and click a button. Thanks, Margill. l don't have to take a remedial math course.