green and blue abacus icon isolated black background traditional counting frame education sign mathematics school |
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| navigate by keyword : abacus education wooden mathematics calculator tool traditional counting toy child vector icon isolated green blue black 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 |
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| Green and blue Abacus icon isolated on black background. Traditional counting frame. Education sign. Mathematics school. Vector. |
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