# Referring to the Last Result

The most recent answer provided by AutoMathic becomes the new default referent of a pronoun such as "that":

`> How much is Pi over two?   (Find 3.14159/2)   1.570795 is PI OVER TWO.Anything else?> What's 7.5% of that?   (Find 7.5(1.570795)/100)   0.117809625 is 7.5 % OF THAT.`

This behavior allows calculations to be done piecemeal, building-up results bit-by-bit to see and use intermediate values:

`Anything else?> What percentage of Pi is that?   Let 'P' stand for "PERCENTAGE"   (Find P)   Solving for P:       P 3.14159                     --------- = 0.117809625          100                          3.14159                     P ------- = 0.117809625           100                       P 3.14159 = 100 (0.117809625)     P (3.14159) = 100 (0.117809625)                   100 (0.117809625)               P = -----------------                        3.14159            P = 3.75 (or 15 / 4, or 3 & 3 / 4)   3.75 (or 15 / 4, or 3 & 3 / 4) is THE PERCENTAGE.`

Note that even though AutoMathic introduced its own noun, "PERCENTAGE", and the user referred to a pseudo-noun, "Pi", their appearance did not supersede the user's intended referent, the last result.  Similarly, other "generic" nouns ("number", "amount", "fraction", "quantity", "part", "portion", "multiple", and well-known constants) do not supersede the user's specific nouns as referents of a pronoun.

Referring to the last result with a pronoun is a very simple way to pose follow-up questions.  Follow-up questions in general are the topic of the next section.