Well first you need to look at the definition which happens to be
: Also known as a reciprocal for a number x, detonated by 1/x or x-1 , is a number in which when it is multiplied by x yields the multiplicative identity .
for example the reportorial for the number 5 is one fifth = 1/5 also know as 2.0
and the reportorial for 0.25 is i / (divided by) 0.25 or even 4
____________________________________________________________
now that you have read the meaning you should have a better understanding
i hope this helps