The air conditioner factory is preparing to assemble a batch of air conditioners, and plans to assemble 45 units per day, which will be completed in 20 days. The task was actually completed in 18 days, how many units are actually assembled per day?
空调厂准备装配一批空调，计划每天装配45台，20天完成．实际18天就完成了任务，实际每天装配多少台？
<gadget id="calculator">45 / 18</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">20 * (5/2)</gadget>
<output>50</output>

<result>50</result>