The heartbeat of an animal is related to its weight. The heartbeat of a mouse is about 500 times per minute, the heartbeat of an elephant is about 2/25 of that of a mouse, and about 1/6 of that of a cat. How many times per minute is the heartbeat of a cat? ?
动物的心跳与体重有关，老鼠每分钟心跳约500次，大象每分钟心跳次数约是老鼠的(2/25)，约是猫的(1/6)，猫每分钟心跳大约分别是多少次？
<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/25) / (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">500 * (2/5)</gadget>
<output>200</output>

<result>200</result>