During 5 hours, a spider can catch 9 flies. How many flies would this spider catch in 30 hours if he would keep his efficiency?
30 hours is 30 / 5 = 
<gadget id="calculator">30/5</gadget>
<output>6</output>
6 times more time.
So the spider would be able to catch 6 * 9 = 
<gadget id="calculator">6*9</gadget>
<output>54</output>
54 flies.

<result>54</result>