Big addition sums, with tens of contributing numbers to be added up, are an integral part of any business, any association or even any household. Assam-Adder, tailor-suited for just this need, is an intuitive, as if on-paper, 40-number adder calculator that can add up to forty contributing later-modifiable terms, whether very large (up to several billions) or very small (up to a few millionth parts of one). There are also special provisions for multiple occurrences of the same term within a given calculation.
Any earlier addition problem, in any one of its past modifications, may be instantly located & recalled here, so as to be re-calculated or further modified. This facility is particularly useful for businesses and organizations needing to recall old calculations. Version 2.2 may include unspecified updates, enhancements, or bug fixes.