In the video, a person is seen writing down a series of mathematical equations on a piece of paper. The person is using a blue pen to write the equations and a blue calculator to solve them. The person's hand is visible in the frame, and they are wearing a ring on their left hand. The equations involve square roots and other mathematical functions. The person appears to be solving the equations in a step-by-step manner, writing down each step as they go. The video is shot in a well-lit room, and the person's hand movements are steady and precise.