Merchants, traders, and clerks in some parts of Eastern Europe, Russia, China, and Africa use abacuses.
mˈɜːtʃənts, tɹˈeɪdɚz, ænd klˈɜːks ɪn sˌʌm pˈɑːɹts ʌv ˈiːstɚn jˈʊɹɹəp, ɹˈʌʃə, tʃˈaɪnə, ænd ˈæfɹɪkə jˈuːs ˈæbɐkəsᵻz.