The length of a rectangle is increased by (1/2) and the width is also increased by (1/2). What is the area of the new large rectangle?
一个长方形，长增加(1/2)，宽也增加(1/2)，新的大长方形面积是原来的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) * (3/2)</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>