Calculate the factorial using Stirling's formula.

Calculates the amount of prolongation fee, based on the terms to defer payment and the amount of arrears. We assume that the interest rate is 7.25% (from 10.05.2012). Prolongation fee - the fee paid by the taxpayers, which, by virtue of the decision of the tax deferred or tax payment deadline laid on installment payment of the tax or tax arrears and interest on arrears     Enter the amount of \ u0119 in the \ u0142otych