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 calculation calculator child chinese circle concept count counting education equipment finance financial flat frame game grey icon inches isolated learning math mathematical mathematics number object old retro row school subtraction symbol tool toy 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. |
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