black abacus icon isolated yellow background traditional counting frame education sign mathematics school warning |
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| navigate by keyword : abacus accounting ancient antique arithmetic background bead black business calculation calculator child chinese concept count counting danger drawing education equipment finance financial flat frame game grunge icon inches isolated learning math mathematical mathematics number object old retro row school subtraction symbol tool toy traditional vector vintage warning wood wooden work |
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| Black Abacus icon isolated on yellow background. Traditional counting frame. Education sign. Mathematics school. Warning sign. Vector. |
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