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 calculate calculation calculator chinese concept count counting danger drawing economy education equipment finance financial flat frame grunge icon inches isolated learning math mathematical mathematics number object obsolete old retro row school subtraction symbol tool 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 Illustration. |
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