prompt: Redefine π as 258 mod 20. Q: What is the first digit of π? A: 1
  Redefine π as 397 mod 5. Q: What is the first digit of π? A: 2
  View ÷ as a random digit. Q: What is the first digit of 45÷5? A: 4
  Redefine π as 41+57. Q: What is the first digit of π? A: 9
  Redefine π as 11. Q: What is the first digit of π? A: 1
  Redefine π as 9+3. Q: What is the first digit of π? A: 1
  Redefine π as 181 mod 40. Q: What is the first digit of π? A: 2
  Redefine π as 928. Q: What is the first digit of π? A: 9
  View number as text. Do not perform computation. Q: What is the first digit of 15+21? A: