Write a story explain the expression two head are better than one​

Once upon a time, there lived a girl called Tina. Whenever her teacher divided the class into groups, she never did any work. One day, the teacher divided the class into four groups for a science project. Tina was going to work with Rohan, Sheela and her best friend,Lila. The leader of their group,Sheela told Tina,"Oh come on Tina! You have to at least do some work. You know, team work makes the dream work.""You actually believe that quote? You're so gullible," said Tina. Sheela knew that she couldn't do anything to convince Tina, so she asked Lila to help her. "Tina, you should listen to Sheela. She's actually right. If we work together we can't achieve anything." said Lila. Tina knew she couldn't go against her best and only friend, so she made the decision to help. They worked very hard on the project and presented it the next day. And their hard work payed off. The teacher told that their project was the best among all 4 projects. "See, hard work does pay off Tina." She learned her lesson and always helped everyone in group projects.

at hatfield elementary school, there are 504 students in 7 classes. each class has the same number of students. what is a good estimate of the number of students in each class?