Divide 1 kg of salt into 5 equal parts, what is the weight of 4 parts in kg
把1千克的盐平均分成5份，其中4份的重量是多少千克
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 * (4/5)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>