Stock photography, photos: Business Concepts; Abacus Stock photos of Golden abacus, close up. Photograph: © Jodie & Mike Coston Click for a larger image and more information Keywords associated with this stock photo: jodie coston, business, abacus, close up, detail, gold, golden, brass, metal, education, finance, financial, learn, tradition, accuracy, math, mathematics, classroom, school, addition, nostalgia, learning, old fashioned, calculate, calculator