Xiaoqiao used to walk 30 meters per minute from home to school, and arrived in 30 minutes. Now she walks 36 meters per minute. Can I arrive at school a few minutes earlier now?
小巧从家到学校原来每分钟走30米，30分钟到达，现在她每分钟走36米．现在可提前几分钟到达学校？
<gadget id="calculator">30 / 36</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">30 * (5/6)</gadget>
<output>25</output>

<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<result>5</result>