(Originais Teachy 2024) - Question Hard of Spanish

During a study trip to Spain, a group of high school students must use local means of transportation to visit several cities, enriching their cultural and linguistic knowledge. When planning the itinerary, the students consider not only the distances between the cities, but also the frequency of trains and the costs of each trip. In a hypothetical situation, the group plans the following route: starting from Madrid, they intend to visit Toledo, Segovia, and Salamanca, before returning to the Spanish capital. The distances between these cities are, respectively, 70 km from Toledo to Madrid, 90 km from Segovia to Madrid, and 200 km from Salamanca to Madrid. The costs of train tickets, in euros, are proportional to the distances traveled, and expenses for food and accommodation are evenly distributed over the days of travel. Considering that the train tickets are round trip (meaning the total cost of the round trip is double the cost of the one-way trip), that the average daily cost per student is 50 euros, and that the group consists of 20 students, what should be the approximate amount, in euros, disbursed by the group only with train transportation, without considering expenses for food and accommodation during the entire trip?