numerator

When N was 2 the numerator was 3, and when N was 3 the numerator was 16.

Multiplying the numerator and denominator inside the summation by a factor of N!

Now anyone who’s mathematically minded would say, that seems weird because you have a unit in the numerator that’s different than the unit in the denominator.

For small values of x, the denominator was very close to 1, while the numerator was slightly less than 6.

This time around, the two factors in each denominator canceled out with factors in the numerators in both the preceding and following fractions.

The simplest arithmetician could see that the nought "went into" the numerator an infinite number of times.

Multiply the numerators together for a new numerator and the denominators together for a new denominator.

Annex one or more ciphers to the numerator and divide by the denominator.

The numerator of the third is the sum of the numerators of the first and second, its denominator, the sum of the two denominators.

The sum of the numerator digits and the denominator digits will, of course, always be 45, and the "digital root" is 9.