line abacus icon isolated white background traditional counting frame education sign mathematics school colorful |
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| navigate by keyword : abacus accounting ancient antique arithmetic art background bead business calculation calculator color colorful concept contour count counting education equipment finance financial flat frame grey icon isolated learning line linear lineart math mathematical mathematics number object old outline retro school square subtraction symbol tool traditional vector vintage white wood wooden work |
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| Line Abacus icon isolated on white background. Traditional counting frame. Education sign. Mathematics school. Colorful outline concept. Vector. |
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