..and here is a non array formula

=TEXT(SUMPRODUCT(MID(0&A2,LARGE(INDEX(ISNUMBER(--MID(A2,ROW($1:$25),1))*
ROW($1:$25),0),ROW($1:$25))+1,1)*10^ROW($1:$25)/10),REPT("0",COUNT(INDEX(--MID(A2,ROW($1:$25),1),0,0))))