On a dark gray blackboard, many mathematical formulas are written in chalkOn a dark gray blackboard, many mathematical formulas are written in chalk
Formula 1 drivers lewis hamilton and jenson buttonFormula 1 drivers Lewis Hamilton and Jenson Button
The formula of water is written in drops on a planeThe formula of water is written in drops on a plane
Yellow car on the formula 1 track overtakes rivalsYellow car on the Formula 1 track overtakes rivals