Maclaurin Series program in VBA/Excel

The Maclaurin Series for the inverse hyperbolic tangent is of the form

x + x3/3 + x5/5 + x7/7 ….

D(tanh-1 x)/dx = (1-x2)-1

Write a VBA program to evaluate this series for x = .512. Continue your
series until a term less than 10-8 is computed.

Input x, the tolerance, and the maximum number of terms from InputBox.
Echo these input data, the answer, the actual number of terms used, and
the value of the last term computed to your spreadsheet. Also display
the exact value and the true error of your result in the spreadsheet.