title: Intel 8086 assembly: add/sub very large number?
body: <p>How to add or sub very large numbers in the x86 assembly?</p>
  
  <p>E.g input: <br><br></p>
  
  <p>first line: max. 20 digit number<br>
  second line: +/- <br>
  third line: max. 20 digit number<br></p>
  
  <p>And these lines repeat when the user exit to program.</p>
  
  <p>does anyone have any ideas?</p>
  
  <p>Thanks!</p>