Question 932678
.


Obviously, this post is a translation from other language,
but the person who translates it,  does not know the standard rules
of presenting such problems in  English  (did not open and 
did not read  Math textbooks for middle schools in  English).


It is a typical mistake of newcomers who start using  English.



        My advise to the translator/composer:


In the Google search engine print 


            " three times longer versus three times as long "


and read the info which Google will provide in response


https://forum.wordreference.com/threads/three-times-longer-than-three-times-as-long-as.1909017/



For other similar possible forms,  print their analogs in  Google again and learn 
the responses from  Google.



Doing this way,  you will learn how not to fall into this trap in the future.