For any rectangle, if the length and width are increased (1/2), what fraction is the current area of the rectangle?
任意一个长方形，如果长和宽增加(1/2)，现在的长方形面积是原来的几分之几？
<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">6 * (3/2)</gadget>
<output>9</output>

<gadget id="calculator">4 * (3/2)</gadget>
<output>6</output>

<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">54 / 24</gadget>
<output>9/4 = around 2.25</output>

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