TypeError: can't multiply sequence by non-int of type 'str'
<pre><code>&gt;&gt;&gt; 
Enter muzzle velocity (m/2): 60
Enter angle (degrees): 45
Traceback (most recent call last):
  File "F:/Python31/Lib/idlelib/test", line 9, in &lt;module&gt;
    range()
  File "F:/Python31/Lib/idlelib/test", line 7, in range
    Distance = float(decimal((2*(x*x))((decimal(math.zsin(y)))*(decimal(math.acos(y)))))/2)
TypeError: can't multiply sequence by non-int of type 'str'
</code></pre>

<p>I'm only new, so don't be too harsh if this is really obvious, but why am i getting this error?</p>
