The lawn at the gate of Shengli Primary School is rectangular, with an area of 810 meters, a length of 30 meters, and a width of 30 meters?
胜利小学门口的草坪呈长方形，面积是810米，长是30米，宽是多少米？
<gadget id="calculator">810 / 30</gadget>
<output>27</output>

<result>27</result>