TL:DR; Calculate the percentage of any number out of any number.
Calculate the percentage of any number out of any number.Great little tool to have on hand.
Math Mechanixs is a general purpose math program with a Math Editor for solving mathematical problems and taking notes, extensive Function Library and Function Solver, 2D and 3D Graphing, and a Calculus Utility with integration and differentiation.
XLSTAT is a complete data analysis and statistics add-in for Excel. It includes regression (linear, logistic, nonlinear), multivariate data analysis, parametric tests, non parametric tests, ANOVA, ANCOVA, forecasting methods.
A Java Application which enables you to execute arithmetic calculation using very long numbers without loosing the precision. You can solve basic operations, permutations, arraging, mixing-ups, arithmetical and geometrical progression.