Theo, Mason, and Roxy are siblings.  Theo drinks 8 cups of water every day. Mason drinks 7 cups of water.  Roxy drinks 9 cups of water every day.  In one week, how many cups of water do the siblings drink together?
Everyday, the three siblings drink 8 + 7 + 9 = 
<gadget id="calculator">8+7+9</gadget>
<output>24</output>
24 cups of water.
In one week, they drink a total of 24 x 7 = 
<gadget id="calculator">24*7</gadget>
<output>168</output>
168 cups of water.

<result>168</result>