The diameter of the tire of a bicycle is 70 cm, and the wheel rotates 250 times per minute. It took Xiaowei 20 minutes to ride from home to grandma’s house. How many meters away is her house from grandma’s house?
一辆自行车的轮胎处直径是70厘米，车轮每分钟转250周，小薇从家骑车到奶奶家用了20分钟，她家距奶奶家多少米？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">250 * 3.14 * 70 * (1/5)</gadget>
<output>10_990</output>

<result>10_990</result>