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