sorta did... the reason it failed was that
\d.\d matches one number, then any one character, then one number...
as
said, you need to use \. in order to escape . to
match . instead of one of any character, but you also
needed \d* or \d+ after the \. to match more than one
number. You were only matching the 5 after the . instead
of 509667... so the regex couldn't match the E