60 days years, 30 days
months.
</p>
<p>Example:
</p>
<pre class="example">(%i1) load(finance)$
(%i2) days360(2008,12,16,2007,3,25);
(%o2)                      - 621
</pre></dd></dl>

<dl>
<dt><u>Function:</u> <b>fv</b><i> (<var>rate</var>, <var>PV</var>, <var>num</var>)</i>
<a name="IDX2156"></a>
</dt>
<dd><p>We can calculate the future value of a Present one given a certain interest
rate.  <var>rate</var> is the interest rate, <var>PV</var> is the present value and
<var>num</var> is the number of periods.
