The outer diameter of a bicycle wheel is 60 cm. Aunt Wang is riding a bicycle, and the tires rotate 150 times per minute. What is the speed of her bicycle in meters per minute?
一辆自行车的车轮外直径是60厘米．王阿姨骑着辆自行车，车胎每分钟转150周．她骑车的速度是每分钟多少米？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3.14 * (3/5) * 150</gadget>
<output>282.6</output>

<result>282.6</result>