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