Renovation of the sports field: Before the sports meeting, the school repaired the lawn of some sports fields. It was originally planned to repair 31.5 square meters of lawn every day, and it took 5 days to complete the repairs. In fact, the task was completed in only 4 and a half days. How many square meters was actually repaired every day?
整修运动场：运动会前学校把部分运动场的草坪进行补修．原计划每天补修31.5平方米的草坪，5天补完，实际只用4天半就完成了任务，实际每天补修多少平方米？
<gadget id="calculator">5 / 4.5</gadget>
<output>1.111111</output>

<gadget id="calculator">31.5 * 1.111111</gadget>
<output>34.999997</output>

<result>34.999997</result>