Xiao Ming has to walk 30 minutes from home to school. If he walks 20 meters more per minute, he can save 5 minutes. How many meters is the distance from Xiao Ming's home to the school?
小明从家到学校要走30分钟，如果每分钟多走20米，就可以少用5分钟．小明家到学校的距离是多少米．
<gadget id="calculator">20 * 30</gadget>
<output>600</output>

<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">600 - 100</gadget>
<output>500</output>

<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/30) * 5</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/30) * 30</gadget>
<output>1</output>

<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">(1/6) + 0</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">500 / (1/6)</gadget>
<output>3_000</output>

<result>3_000</result>