There are three trees in the town square. The tallest tree is 150 feet tall. The middle height tree is 2/3 the height of the tallest tree. The shortest tree is half the size of the middle tree.  How tall is the shortest tree?
Tallest Tree: 
<gadget id="calculator">150</gadget>
<output>150</output>
150 feet.
Middle Tree:150(2/3)=300/3=100 feet.
Shortest Tree:100/2=
<gadget id="calculator">100/2</gadget>
<output>50</output>
50 feet.

<result>50</result>