title: Multiply floats inside subsublists as values in a dictionary [edited]
body: <p>Say I have:</p>
  
  <pre><code>worksheet={
  "a":[[1.0],[2.0, 3.0]],
  "b":[[4.0]]
  }
  </code></pre>
  
  <p>My aim is to multiply each value inside subsublists by a single value, -keeping the same structure- let's say *10, for instance, so I need:</p>
  
  <pre><code>worksheet={
  "a":[[10.0],[20.0, 30.0]],
  "b":[[40.0]]
  }
  </code></pre>
  
  <p>Every dict value will always contain a list with one or more sublists.
  Every sublist will always contain at -least- a float. No empty lists (no empty dict values). I cannot use Pandas or Numpy.</p>