A man stands in front of a desk and talks about numbers in Portuguese
A guy is giving thorough details about some particular calculations.
A man with glasses is speaking in a foreign language about math formulas
A man with spectacles is giving a presentation where he discusses financial calculations.
A man walks through a math problem as number appear behind him.
A man in a stripped shirt and glasses is talking
A man is standing up talking in front of a digital board.
A person was teaching or explaining about some calculations by moving his hands
Man with glasses explaining how to perform math credit calculations.
A man speaking in spanish is making a presentation of a budget.