Pamela reapplies an ounce of sunscreen every hour she's outside.  Her sunscreen comes in 8-ounce bottles.  While on vacation, if she will be outside 4 hours a day over 8 days, how many bottles of sunscreen will she need to pack?
She will be outside 4 hours a day for 8 days so that's 4*8 = 
<gadget id="calculator">4*8</gadget>
<output>32</output>
32 hours.
She applies 1 ounce of sunscreen every hour and she'll be outside for 32 hours so she needs 1*32 = 
<gadget id="calculator">1*32</gadget>
<output>32</output>
32 ounces of sunscreen.
Her bottle holds 8 ounces of sunscreen and she needs 32 ounces so she will need to pack 32/8 = 4 bottles of sunscreen.

<result>4</result>