Recording reels videos

Hi, I will provide you mathematics sheets with questions and answers. I just need you to write the answers as you see on the paper and record a video 25-30 seconds each. No worries about the sound I will cover the with music already. See the sample video. I plan to pay 0.25-0.30$ per video and ready to buy at least 100 videos and 50 videos each month in batches. For this task budget is 30$/100 videos.