The wheel diameter of a bicycle is 10 decimeters. Grandpa Wang rides the bicycle and rotates 30 times per minute. At this speed, how many meters can Grandpa Wang ride the bicycle per hour?
一辆脚踏车的车轮直径是10分米，王爷爷骑脚踏车每分钟转动30周，照这样的速度，王爷爷每小时骑车能前进多少米？
<gadget id="calculator">10 / 10</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 30 * 1 * 1 * 60</gadget>
<output>5_652</output>

<result>5_652</result>