A buyer is evaluating some ruby stones in Mogok, Myanmar (Burma), Asia

African woman holding basketball on court

Hand of African American woman texting on cell phone

Native American boy solving equation on blackboard

Officer calculating the course of the ship, ship's bridge, Ventus cruise ship, Nassau bay, near Cape Horn, Tierra de Fuego, Patagonia, Chile

Midwife Calculating Estimated Delivery Date

charts organic food lunch boxes

Kid playing with abacus studio

Schoolgirl stands in front of the blackboard in the classroom and calculates, Austria, Europe

Top view work lunchboxes with copy space

Man And Woman With Documents And A Calculator, Regina, Saskatchewan, Canada