/u/randomuser88385, you need to escape your asterisks to keep them visible. Put a backslash in front of the special character to tell Markdown to display it rather than its effects (bookending text with asterisks makes italics).

Intended text:

0.006569417387*EXP(0.0955814*AGE)

Un-escaped:

0.006569417387EXP(0.0955814AGE)

Escaped (as typed):

0.006569417387\*EXP(0.0955814\*AGE)