mixedTypes
  w “1” + 1,!                 ; output: 2 — “1” is equal to 1.
  w 1 + “bread”,!             ; output: 1 — “bread” starts with a letter, so it equals 0.
  w 5 * “2 eggs”,!            ; output: 10 — “2 eggs” starts with “2”, so it equals 2
  w “milk: 1 gallon” * 2,!    ; output: 0 — the string starts with a letter, so it equals 0.
  q