isometric abacus icon isolated grey background traditional counting frame education sign mathematics school |
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| navigate by keyword : abacus education wooden mathematics calculator tool traditional counting frame count vector icon isolated isometric square button blue green pink 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 |
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| Isometric Abacus icon isolated on grey background. Traditional counting frame. Education sign. Mathematics school. Square button. Vector. |
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