title: Multiply element in multidimensional array
body: <p>-&gt; Please help with the implementation of a function</p>
  <p>Basically I want to manipulate an image</p>
  <p>Imagine that the image can be brake apart in pixels
  -&gt; each pixel of the image will be (for an easy example) &quot;a number&quot;</p>
  <pre><code>        int[,] originalImage = new int[,]
          {
              { 1,2,3 },
              { 4,5,6 }
          };
  </code></pre>
  <p>And I need to double the size of the image x2 (or x3, x4, etc)
  the pixel &quot;1&quot; when double the size will be copied on te right position, down and on the corner</p>
  <pre><code>            int[,] expectedResult = new int[,]
          {
              { 1,1,2,2,3,3 },
              { 1,1,2,2,3,3 },
              { 4,4,5,5,6,6 },
              { 4,4,5,5,6,6 }
          };
  </code></pre>
  <p>How does the function can be implemented?</p>
  <pre><code>Multiply(int[,] originalImage, int multiply)
  </code></pre>