A rectangle whose length is increased by (1/2) and width (1/3), what is the original area?
一个长方形，长增加(1/2)，宽增加(1/3)，原来的面积是现在的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>