Xiaolin's average step length is 0.54 meters. He walked 820 steps from home to school and back. How many meters is his home from school?
小林的平均步长是0.54米，他从家到学校往返一趟走了820步，他家离学校多少米．
<gadget id="calculator">820 / 2</gadget>
<output>410</output>

<gadget id="calculator">0.54 * 410</gadget>
<output>221.4</output>

<result>221.4</result>