title: Calculate Grid Position
body: <p>I'm trying to figure out a way to calculate the positions in the grid like I have below.  I know the row, column, totalColumns, totalRows. For example, given column = 2, row = 0, totalColumns = 4, totalRows = 3, the position is B (11)</p>
  
  <pre><code>           Cols
         +   +   +   +   +
         | 0 | 1 | 2 | 3 | 
      +--+---|---|---|---|---
       0 | 9 | A | B | C |
      +--+---|---|---|---|---  Rows
       1 | 5 | 6 | 7 | 8 |   
      +--+---|---|---|---|---
       2 | 1 | 2 | 3 | 4 | 
      +--+---|---|---|---|---
  </code></pre>