Hazel and Razel are twins who share everything they receive. If Hazel received 6 shirts, while Razel received twice the number of shirts as Hazel. How many shirts do they have in total?
Razel received 6 x 2 = 
<gadget id="calculator">6*2</gadget>
<output>12</output>
12 shirts.
Therefore, they have 12 + 6 = 
<gadget id="calculator">12+6</gadget>
<output>18</output>
18 shirts altogether.

<result>18</result>