grey abacus icon isolated white background traditional counting frame education sign mathematics school vector |
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| navigate by keyword : abacus education wooden mathematics calculator tool traditional counting toy child vector icon isolated white grey game frame count background wood object business flat accounting math finance retro calculation old school subtraction antique learning vintage arithmetic mathematical ancient bead number concept equipment symbol financial work inches row chinese economy obsolete calculate |
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| Grey Abacus icon isolated on white background. Traditional counting frame. Education sign. Mathematics school. Vector. |
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