. For example: <code>50000~80000 x 0.10~0.20 x 5~10 - 20000~50000</code></li>
      <li>Estimate future income with uncertain money per month, length of a gig, and tax rate. For example: <code>1000~1500 x 10~12 x (30~50 / 100)</code></li>
      <li>Estimate time saved by a dishwasher (or any other piece of technology) given uncertain number of times used per week, uncertain time saving per use, uncertain lifetime and uncertain installation costs. For example: <code>(3~5 * 5~10 * 51 * 7~15) / 60 - 10~15</cod