In 5 years, Raven will be 4 times as old as Phoebe. If Phoebe is currently 10 years old, how old is Raven?
In five years, Phoebe will be 10+5 = 
<gadget id="calculator">10+5</gadget>
<output>15</output>
15 years old.
If Raven is four times as old as Phoebe in fifteen years, he will be 4*15 = 
<gadget id="calculator">4*15</gadget>
<output>60</output>
60 years old in 5 years.
Currently, Raven is 60-5 = 
<gadget id="calculator">60-5</gadget>
<output>55</output>
55 years old.

<result>55</result>