title: Searching for numbers in a string
body: <p>User inputs a string in form of </p>
  
  <blockquote>
    <p>length=10 width=15</p>
  </blockquote>
  
  <p>The task is to find the length's and width's value in such a string(and assign them to variables). So, how can I find those two numbers? What functions/methods should I use? Can you guys just give me an idea?</p>