In the video, a person is seen writing on a piece of paper. The person is using a green marker to write on the paper. The person is writing a series of numbers and mathematical equations. The person is pointing to the numbers and equations as they write them. The person is wearing a white shirt and is sitting at a table. The background is blurred, but it appears to be a room with a blackboard. The person is writing in a neat and organized manner, and the writing is clear and legible. The person seems to be focused on their work, and there is no one else visible in the video.