black abacus icon isolated white background traditional counting frame education sign mathematics school yellow |
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| navigate by keyword : abacus accounting ancient antique arithmetic background bead beads black bubble business calculate calculation calculator chinese concept count counting economy education equipment finance financial flat frame icon isolated learning math mathematical mathematics number object obsolete office old retro row school speech subtraction symbol tool traditional vector vintage wood wooden work yellow |
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| Black Abacus icon isolated on white background. Traditional counting frame. Education sign. Mathematics school. Yellow speech bubble symbol. Vector. |
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