black line abacus icon isolated white 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 button calculation calculator child concept contour count counting education equipment finance flat frame game icon isolated learning line linear lineart math mathematical mathematics number object old outline retro school silver square subtraction symbol tool toy traditional vector vintage wood wooden |
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| Black line Abacus icon isolated on white background. Traditional counting frame. Education sign. Mathematics school. Silver square button. Vector. |
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