Qiao Qiao walks to school every morning. If he walks 50 meters per minute, he will be late by 5 minutes. If he walks 70 meters per minute, he will arrive at school 5 minutes earlier. How many meters is the distance between Qiao Qiao and the school?
乔乔每天早上步行上学，如果每分走50米，则要迟到5分，如果每分走70米，则可提前5分到校．乔乔到学校的路程是多少米．
<gadget id="calculator">30 + 5</gadget>
<output>35</output>

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

<result>1_750</result>