Slide rules, abaci, blur, product photography, Still life, silhouette, arithmetic help, mathematics, count, abacus, addition, subtraction, plus, below

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Size: 3909px × 2600px
Photo credit: © V. Kilian / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: abaci, abacus, addition, arithmetic, blur, count, life, mathematics, photography, product, rules, silhouette, slide, subtraction