The distance between A and B is 200km, and a car travels the whole distance (4/5), how many kilometers does it travel?
甲乙两地相距200km，一辆汽车行了全程的(4/5)，行了多少km？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 * (4/5)</gadget>
<output>160</output>

<result>160</result>