THE ISSUE OF NUMBERS IN ENGLISH
When I first came to Spain I noticed that you write numbers slightly differently to us in the UK. When I was walking in the metro I would see an advert for an exotic holiday for 1.820 euros. If you look at that number from a English perspective it would mean 1,82 euros! Wow, very cheap! Clearly, something was wrong.
Later, I learnt that you write numbers in Spanish differently to how we write them in English. So, in English we write 1,820.30 euros which in Spanish would be written 1.820,30 euros. The comma and the dot are in different places!
Hope that helps!
Soy el director de Daniel Smith + Partners. Tengo más de 10 años de experiencia enseñando inglés a españoles.