<section id="description">
An irrational decimal fraction is created by concatenating the positive integers:0.123456789101112131415161718192021...
It can be seen that the 12th digit of the fractional part is 1.
If dn represents the nth digit of the fractional part, find the value of the following expression.d1 × d10 × d100 × d1000 × d10000 × d100000 × d1000000
</section>

function champernownesConstant(n) {
  // Good luck!
  return true;
}

champernownesConstant(100);


index

Задача 40: постоянная Шампернауне

Problem 40: Champernowne's constant

<code>champernownesConstant(100)</code> should return 5.

<code>champernownesConstant(1000)</code> should return 15.

<code>champernownesConstant(1000000)</code> should return 210.