isometric abacus icon isolated blue background traditional counting frame education sign mathematics school |
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| navigate by keyword : abacus accounting ancient antique arithmetic background bead blue business button calculation calculator child circle concept count counting education equipment finance financial flat frame game icon inches isolated isometric 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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| Isometric Abacus icon isolated on blue background. Traditional counting frame. Education sign. Mathematics school. Blue circle button. Vector. |
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