white line abacus icon isolated black background traditional counting frame education sign mathematics school |
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| navigate by keyword : abacus accounting ancient antique arithmetic art background bead black business calculation calculator child concept contour count counting education equipment finance financial flat frame game icon isolated learning line linear lineart math mathematical mathematics number object old outline retro school subtraction symbol tool toy traditional vector vintage white wood wooden work |
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| White line Abacus icon isolated on black background. Traditional counting frame. Education sign. Mathematics school. Vector. |
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