School starts at 8:10, Xiao Hua goes to school at a speed of 60 m/min, and arrives at school at 7:50; goes to school at a speed of 50 m/min, and arrives at school at 8:00, how far is Xiao Hua's home from school?
学校8：10开始上课，小华以60米/分的速度去学校，7：50到校；以50米/分的速度去学校，8：00到校，小华家离学校多远？
<gadget id="calculator">1 / 50</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/50) - (1/60)</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">10 / (1/300)</gadget>
<output>3_000</output>

<result>3_000</result>