Mason is three times younger than Sydney and Sydney is six years younger than Mason's father. If Mason is 20 years old, how old is his father?
Sydney is 20*3 = 
<gadget id="calculator">20*3</gadget>
<output>60</output>
60 years old.
Mason's father is 60+6 = 
<gadget id="calculator">60+6</gadget>
<output>66</output>
66 years old.

<result>66</result>