(let (
      (From (read (current-input-port)))
      (To      (read (current-input-port)))
      )
    (let loop((i From))
        (begin
            (when (or  (= (modulo i 3) 0 ) (= (modulo i 10) 3)
                              (= (modulo (/ i 10) 10) 3))
                (begin (display i) (newline)))
            (unless (= i To)
                (loop (+ i 1)))
        )
    )
)