The speed of a train is 180 km/h, the speed of a car is (1/9) of the train, the speed of the car is (5/9) of the speed of a jet plane, the speed of the jet plane What is the speed of the plane?
一列火车的速度是180千米/时，一辆小汽车的速度是这列火车的(1/9)，小汽车的速度是一架喷气式飞机速度的(5/9)，这架喷气式飞机的速度是多少？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(1/9) / (5/9)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">180 * (1/5)</gadget>
<output>36</output>

<result>36</result>