If 8 meters are increased by (1/4) and then decreased by (1/4) meters, what is the number of meters?
8米增加(1/4)，又减少(1/4)米后是多少米．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">8 * (1/4)</gadget>
<output>2</output>

<gadget id="calculator">2 - (1/4)</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">8 + (7/4)</gadget>
<output>39/4 = around 9.75</output>

<result>39/4 = around 9.75</result>