SpartasCalc is an Integer calculator with 20 digits for Excel. The full version has 40 digits. SpartasCalc adds, subtracts and multiplies for you very exactly, i.e. without using exponents. SpartasCalc is necessary if you need to calculate with huge numbers and if also the last digit has to be exact. SpartasCalc was helpful to solve the 3D Version of Fermats last theorem. It may be also very useful in calculating electrical fields, etc.
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