How many cans of energy drink must be used for the marathon?

For a marathon, 24,000 liters of energy drink must be used. An energy drink contains 8 grams energy powder per 100 ml water. The energy drink contains a total of 1.25 kg. How many cans of energy drink must be used for the marathon?|||you only drink it when you feel the need to drink it. stick to water until you feel lack of energy and have a energy drink . i know in some marathons there are people who hand out energy gels and sweets in certain distances.|||Never drink energy drink before a marathon. People have died doing that before.