02 How do I find the sum of the digits and its variants?

After entering any number, the following results appear directly:

  • Cross sum of the sum
  • Iterated checksum of the sum
  • Alternating backward sum of the
  • rosses of the sum
  • Alternating forward sum of digits
  • Cross sum of digits
  • Iterated checksum of digits
  • Alternating sum of digits backwards
  • Alternating forward cross sum of digits
  • Cross sum of the product
  • Iterated cross sum of the product
  • Alternating backward cross sum of the product
  • Alternating forward cross sum of the product
  • Cross product
  • Iterated cross product
  • Alternating cross product