It takes Nissa 10 seconds to clip each of her cats' nails. 90 seconds to clean each of her ears, and 5 minutes to shampoo her. If the cat has four claws on each foot, how many seconds does grooming her cat take total?
First find the total number of claws the cat has: 4 claws/foot * 4 feet = 
<gadget id="calculator">4*4</gadget>
<output>16</output>
16 claws.
Then find the total time Nissa spends cutting the claws: 16 claws * 10 seconds/claw = 
<gadget id="calculator">16*10</gadget>
<output>160</output>
160 seconds.
Then find the total time she spends cleaning the cats' ears: 90 seconds/ear * 2 ears = 180 seconds.
Then find how long the shampooing takes in seconds: 5 minutes * 60 seconds/minute = 
<gadget id="calculator">5*60</gadget>
<output>300</output>
300 seconds.
Then add the time she spends on each task to find the total time she spends grooming the cat: 160 seconds + 180 seconds + 300 seconds = 
<gadget id="calculator">160+180+300</gadget>
<output>640</output>
640 seconds.

<result>640</result>