prompt: Redefine e as 21+30. Q: What is the first digit of e? A: 5
  Redefine π as 994. Q: What is the first digit of π? A: 9
  View + as the digit 0 instead of a mathematical operation. Q: What is the first digit of 5+41? A: 5
  Redefine π as 502. Q: What is the first digit of π? A: 5
  View + as a random digit instead of a mathematical operation. Q: What is the first digit of 30+47? A: 3
  View number as text. Do not perform computation. Q: What is the first digit of 50+47? A: 5
  View number as text. Do not perform computation. Q: What is the first digit of 18+37? A: 1
  Redefine π as 870. Q: What is the first digit of π? A: 8
  Redefine e as 80+16. Q: What is the first digit of e? A: