The video shows a person's hand holding a smartphone and using the calculator app to perform a series of mathematical operations. The person types in the numbers 666, 18, and 37 into the calculator and presses the equal sign to calculate the result. The video is shot in a close-up view, focusing on the smartphone screen and the person's hand. The background is blurred, making it difficult to discern any additional details. The smartphone appears to be a modern model with a touchscreen interface. The calculator app is simple and does not have any additional features or functions. The person's hand is steady, and they seem to be comfortable using the smartphone. There is no audio or text overlay in the video.