The net debt is calculated by taking total borrowings (long‑term borrowings + short‑term borrowings + current portion of long‑term borrowings) and subtracting cash and cash equivalents (including short‑term investments).  

- Total borrowings = 68,191 M + 18,392 M + 2,835 M = 89,418 M EUR  
- Cash & equivalents = 11,041 M + 78 M = 11,119 M EUR  
- Net debt ≈ 89,418 M – 11,119 M = 78,299 M EUR  

EBITDA is obtained by adding back depreciation, amortisation and impairment to the operating profit (EBIT):  

- Operating profit = 11,193 M EUR  
- Depreciation, amortisation & impairment = 7,447 M EUR  
- EBITDA = 11,193 M + 7,447 M = 18,640 M EUR  

Net Debt / EBITDA = 78,299 M / 18,640 M ≈ 4.2.  

<answer>4.2</answer>