Status: IN
The `n % 10` / `n //= 10` loop for digit extraction is a recurring idiom across dozens of solutions in this repo (e.g., `self-dividing-numbers`, `alternating-digit-sum`, `add-digits`, `subtract-the-product-and-sum-of-digits-of-an-integer`)
Source: entries/2026/06/06/count-the-digits-that-divide-a-number-solution.md