black and white abacus icon isolated background traditional counting frame education sign mathematics school |
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| navigate by keyword : abacus accounting ancient antique arithmetic background bead beads black business button 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 square subtraction symbol tool traditional vector vintage white wood wooden work |
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| Black and white Abacus icon isolated on white background. Traditional counting frame. Education sign. Mathematics school. Square button. Vector. |
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