Divide half of a piece of paper into 4 equal parts, each part is how much of this paper
把一张纸的一半平均分成4份，每一份是这张纸的多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/2) * (1/4)</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>