Divide 2 tons into 8 parts on average, each part is the total ((())/(())), how many tons is it?
把2吨平均分成8份，每份是总数的((())/(()))，是多少吨．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">2 * (1/8)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>