Divide 20 peaches into 4 parts on average, each part is ((())/(())) of these peaches, how many are 2 parts.
把20个桃平均分成4份，每份是这些桃的((())/(()))，2份是多少个．
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">20 * (1/2)</gadget>
<output>10</output>

<result>10</result>