title: Best method to implement many layout(XML) in an Android app
body: <p>I am very new to Android development and I'm trying to create a calculator with different layouts for different kinds of mathematical problem solving. 
  So if I add around 100 formulas starting different activities isn't an option I guess. So what will be the best method to implement this idea?</p>
  
  <p>Currently I plan to make different XML layouts(100 for 100 formulas) and use LayoutInflater all in one single activity. What do you guys recommend?</p>