/*:
 # Sub-string divisibility
 [Problem 43](https://projecteuler.net/problem=43) - Diifculty level: 5%

 The number, 1406357289, is a 0 to 9 pandigital number because it is made up of each of the digits 0 to 9 in some order, but it also has a rather interesting sub-string divisibility property.

 Let d1 be the 1st digit, d2 be the 2nd digit, and so on. In this way, we note the following:

 ![](43-1.png)

 Find the sum of all 0 to 9 pandigital numbers with this property.
 */
