The average length of Mr. Li’s step is 50 centimeters. He walked 850 steps from home to school. How many meters is it from his home to school?
李老师走一步平均长度为50厘米，他从家到学校共走了850步，他家到学校有多少米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 850</gadget>
<output>425</output>

<result>425</result>