> program p1004;
> var
>   a,b,c,d,e,f,g,h,i,j,k,l,zong:real;
> begin
>   readln(a,b,c,d,e,f,g,h,i,j,k,l);
>   zong:=(a+b+c+d+e+f+g+h+i+j+k+l)/12;
>   writeln('$',zong:8:2);
>   readln;
> end.
> 为什么错？？？？？