Marc bought 50 episodes of the show "Friends" online. Each day Marc watches 1/10 of the episodes he bought. How many days will Marc need to finish 50 episodes of the show he bought?
Marc watches 50 * 1/10 = 
<gadget id="calculator">50*1/10</gadget>
<output>5</output>
5 episodes a day.
So, he will need 50 / 5 = 
<gadget id="calculator">50/5</gadget>
<output>10</output>
10 days to finish all episodes he bought.

<result>10</result>