A leopard can run at a speed of 110 km/h. 20 km/h more than twice the fastest speed of a cat. What is the cat's top speed?
豹奔跑的时速能达到110千米/时．比猫最快时速的2倍还多20千米/时．猫的最快时速是多少？
<gadget id="calculator">110 - 20</gadget>
<output>90</output>

<gadget id="calculator">90 / 2</gadget>
<output>45</output>

<result>45</result>