In 2 years, Maxwell will be twice his sister's age. If his sister is now 2, how old is Maxwell now?
In two years, Maxwell's sister will be 2 years + 2 years = 
<gadget id="calculator">2+2</gadget>
<output>4</output>
4 years old.
Therefore, Maxwell will be 4 years x 2 = 
<gadget id="calculator">4*2</gadget>
<output>8</output>
8 years old in two years.
Maxwell is now 8 years - 2 years = 
<gadget id="calculator">8-2</gadget>
<output>6</output>
6 years old.

<result>6</result>