Revision d9c20a8f-a6b1-4d0e-9bc9-64a129416c6c - Code Golf Stack Exchange

###Introduction

In base 10, the Champernowne constant is defined by concatenating representations of successive integers. In base 10: `0.1234567891011121314151617...` and so on.

You can see that the first appearence of `15` starts at the `20th` decimal:

 Position
 0000000001111111111222222222233333333334444444444555555555566666666
 1234567890123456789012345678901234567890123456789012345678901234567
 ^
 0.1234567891011121314151617181920212223242526272829303132333435363738...
 ^^
 15 = position 20

The first appearence of `45` starts at the `4th` decimal:

 Position
 0000000001111111111222222222233333333334444444444555555555566666666
 1234567890123456789012345678901234567890123456789012345678901234567
 ^ 
 0.1234567891011121314151617181920212223242526272829303132333435363738...
 ^^
 45 = position 4

So, the task is easy. Given a non-negative integer, output the position of the integer in the Champernowne constant.

###Rules

 - You may provide a function or a program
 - This is [tag:code-golf], so the submission with the least amount of bytes wins!

###Test cases

 Input: 20
 Output: 30

 Input: 333
 Output: 56

 Input: 0
 Output: 11 (note that the 0 before the decimal point is ignored)

 Input: 2930
 Output: 48