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calculator [calculators]▼(electronic device that performs mathematical calculations)noun[UK: ˈkæl.kjʊ.leɪ.tə(r)] [US: ˈkæl.kjə.ˌle.tər]
abacus [abacuses]▼(device for performing arithmetical calculations)noun[UK: ˈæ.bəkəs] [US: ˈæ.bəkəs]
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