I am still struggling with calculating efficiently.

- North America: 23 employees * 8 hours a day * 220 days a year * (1,4 * 25 EUR/hour) = EUR 1,416.800

Are there any shortcuts to this calculation or do I just have to get quicker with my pen&paper math (long multiplications). Even if I summarize the calculation to 23 * 1760 * 35, I feel that I still need long multiplication to solve it.

Do I miss the obvious here? Or is long multiplication indeed intended for this calculation?