How does the number of eggs fertilized relate to the number of offspring

It tells you about the number of eggs fertilized because the parents both need 23 chromosomes so 1 is 46 eggs 2 is 92 and so on.

The number of eggs fertilized in a perfect situation SHOULD be the number of offspring. However, outside factors can interfere with the birth of offspring. Typically the number of eggs fertilized SHOULD be identical to the number of offspring but is typically leas than the number of eggs fertilized.