I want this function as shortcode for a long time

Rev.1 : I found the soln. to enable any shortcode incl. “How Old Am I”on each front page entries and excerpts :
Shortcodes Anywhere or Everywhere
https://wordpress.org/plugins/jonradio-shortcodes-anywhere-or-everywhere/
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Not thing to said, simply perfect and unique!
I’ve some suggestion, is it possible to use this shortcode on post title and excerpt?

Thanks in advance,