In 10 years, Cornelia will be three times as old as Kilee. If Kilee is currently 20 years old, how old is Cornelia now?
In 10 years, Kilee will be 20 years + 10 years = 30 years.
In ten years, Cornelia will be 3 * 30 years = 
<gadget id="calculator">3*30</gadget>
<output>90</output>
90 years old.
Cornelia is currently 90 years - 10 years = 
<gadget id="calculator">90-10</gadget>
<output>80</output>
80 years old.

<result>80</result>