How to remove extra in a cell?

Question

Google Sheets

Whether prompt it is possible somehow under the formula, to delete superfluous values ​​in a cell?
I have such data. I get them via api. The order of the line is always changing.
That is, it can be so
{reserved=0.0, present=9.0, coming=0.0}
or so
{present=9.0, coming=0.0, reserved=0.0}
. I need to leave only present = Value in this cell. The meaning is naturally always different. The other two, coming and reserved, always have 0.0.
Ideally, in general, output only the digit which is equal to present. But there are no ideas at all, except how to solve it at the json generation stage

spoiler

Larger

Answer 1

=REGEXREPLACE(
   REGEXEXTRACT(
      A1
      ;"present=(\d+[,.]?\d?)"
   )
   ;"\."
   ;","
)

where A1 is the data link