substring

       select  number
         ,Cast(substring(number, 1,len(number)-2)+ cast(Case WHEN cast(right(number,2) as int)>9 Then cast(Cast(right(number,2)as int) as varchar(2)) Else '' ENd as varchar(2)) as int) as number 
         
         from test
 

        /*

number  number
057740500       577405
0410104 4101
087219602       872196
0020190 20190
0077853 77853
*/