Delete the Digits!

Logic Level 4

$\large 1\ 2\ 3\ 4\ 5\ 6\ \ldots \ 37\ 38\ 39\ 40$

Delete 60 digits from the number above in such a way as to make the resulting number as small as possible. Submit the resulting number as your answer.

Note: The resulting number must not start with a 0.

Delete the Digits!

Also try this problem: Locate the Digits!