What this calculator does
Multiply whole integers exactly and display place-value partial products.
How it works
The calculator evaluates product = multiplicand × multiplier using place-value partial products. Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
2-
?multiplicand=MultiplicandText · Required · Default: 123456789012345
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?multiplier=MultiplierText · Required · Default: 98765
Outputs
2-
productExact productText · Primary output
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partialCountPartial productsWhole number
Inputs and results
The inputs are Multiplicand, Multiplier. Results include Exact product, Partial products.