The math checks out (if you don’t check it too hard)

{
  "input": {
    "prompt": " Close-up photo of the whiteboard content: equations that comically mix calculus symbols, a Greek lambda, a few faux-hieroglyphs, and—clearly visible—a small doodle of a sad cat in the margin. A hand holding a marker mid-gesture. Shallow depth of field, expensive marker colors, and a hint of the pyramid blurred in the background to anchor the setting."
  }
}