title: Increment another cell value in excel using the same cell again and again
body: <p>I have a excel data in a cell. Lets call it CELL A5.</p>
  <p>I have another cell lets say B5.</p>
  <p>I want that whatever value I will provide in B5 it will get incremented in A5 everytime I enter value in B5. FOR EXAMPLE when I enter 10 A5 value will be 10 at first. NExt time when I enter value 5 in B5 A5 will increment to 15.</p>
  <p>Kindly let me know how to acheive that. (Will a button and vb script necessart to implement this)</p>