Process a batch of garments, plan to make 45 sets per day, and complete in 20 days. It was actually completed in 18 days, how many more sets are processed on average per day?
加工一批服装，计划每天做45套，20天完成．实际18天完成，平均每天多加工多少套？
<gadget id="calculator">20 / 18</gadget>
<output>10/9 = around 1.111111</output>

<gadget id="calculator">45 * (10/9)</gadget>
<output>50</output>

<gadget id="calculator">50 - 45</gadget>
<output>5</output>

<result>5</result>