silver abacus icon isolated black background traditional counting frame education sign mathematics school long |
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| navigate by keyword : abacus education wooden mathematics calculator tool traditional counting frame count vector icon isolated silver long shadow black 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 row chinese economy obsolete calculate beads office |
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| Silver Abacus icon isolated on black background. Traditional counting frame. Education sign. Mathematics school. Long shadow style. Vector. |
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