Lily bought a Russian nesting doll as a souvenir. The biggest doll is 243 cm tall, and each doll is 2/3rd the size of the doll that contains it. How big is the 6th biggest doll?
First find the size of the second-biggest doll: 243 cm * 2/3 = 
<gadget id="calculator">243*2/3</gadget>
<output>162</output>
162 cm.
Then find the size of the third-biggest doll: 162 cm * 2/3 = 
<gadget id="calculator">162*2/3</gadget>
<output>108</output>
108 cm.
Then find the size of the fourth-biggest doll: 108 cm * 2/3 = 
<gadget id="calculator">108*2/3</gadget>
<output>72</output>
72 cm.
Then find the size of the fifth-biggest doll: 72 cm * 2/3 = 
<gadget id="calculator">72*2/3</gadget>
<output>48</output>
48 cm.
Then find the size of the sixth-biggest doll: 48 cm * 2/3 = 
<gadget id="calculator">48*2/3</gadget>
<output>32</output>
32 cm.

<result>32</result>