The sheep and goats of Qingqing Grassland Primary School greened the campus. The original plan was to pave 30 square meters of lawn every day, and it took 4.5 days to complete the task. In fact, it only took 3 days to complete the task. How many square meters was actually paved every day?
青青草原小学的羊羊们绿化校园，原计划每天铺草坪30平方米，4.5天铺完，实际只用了3天就完成了任务，实际每天铺多少平方米？
<gadget id="calculator">4.5 / 3</gadget>
<output>1.5</output>

<gadget id="calculator">30 * 1.5</gadget>
<output>45</output>

<result>45</result>