abacus elongated frame with rows wires grooves along which the beads used for calculation slide |
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| navigate by keyword : abacus add addition aged along arithmetic asphalt auditor beads bookkeeper business calculation calculus closeup compute computer concept count cracks credit debit deep device directly elongated frame grooves instrument irs keywords located mathematical moss new numerical obsolete old oldfashioned retro rows simple slide subtraction surface tool top traditional understanding view vintage wires |
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| Old abacus is located on green grass. View from above. An outdated approach to business |
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