“متر مكعب رمل بياخد ست شكاير اسمنت، بيفردلك 40 متر مسطح بياض 2 سم.”

A man in a blue polo shirt stands in front of a whiteboard, explaining how to calculate the amount of cement and sand needed for plastering. He uses a marker to write formulas on the whiteboard as he speaks, demonstrating the calculations.