title: How to get an integer value that is greater than the maximum integer value
body: <p>I know that in Java an int can get a value of 2,147,483,647. But I want more value than that. I have a formula for example:</p>
  
  <pre><code>double x = a/(b*c); 
  </code></pre>
  
  <p>So the denominator (b*c) can reach to 10^10 or maybe even higher than that. But whenever I execute the formula, the value is always limited to 2,147,483,647. I know because x must always be smaller than 1.0.
  P/S: Even variable "a" can also reach 10^10 if some conditions are satisfied.
  a,b,c are all integer numbers.</p>