what's the number of times the letter "s" appears in:
1948　 "kitagawa and company limited" was founded for the sales of packaging materials.
seinosuke kitagawa and sotosaburo kitagawa were appointed as representative board members.
1963 changed corporate name to "kitagawa chemical engineering co., ltd."
1970 established "kitagawa chemical engineering co., ltd."
1971 established "nippon aspherical lens co., ltd."
1990 chaned corporate name to "nalux co., ltd."
2000 astronomical telescope "subaru" of national astronomical obervatory of japan started its operation, for which micro lens array was supplied by nalux.
2011 founded "nni co., ltd." to industrialize the imprinting technology.
user
In the text, there are twenty-seven "s"s.
assistant