From home to school, if Xiao Ming walks 50 meters per minute, he arrives just right; if he walks 20 meters more per minute than before, he can arrive 10 minutes earlier. How far is it from home to school?
小明从家到学校，如果每分钟走50米，正好到达；如果每分钟比原来多行20米，就可以提前10分钟到达，从家到学校有多远？
<gadget id="calculator">50 * 10</gadget>
<output>500</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<gadget id="calculator">500 + 200</gadget>
<output>700</output>

<gadget id="calculator">20 - 50</gadget>
<output>-30</output>

<gadget id="calculator">50 + (-30)</gadget>
<output>20</output>

<gadget id="calculator">700 / 20</gadget>
<output>35</output>

<gadget id="calculator">50 * 35</gadget>
<output>1_750</output>

<result>1_750</result>