Worker Mr. Wang processes 45 parts per hour, and Mr. Li processes 52 parts per hour. If they all work for one day (calculated by 8 hours). How many parts does Master Wang process less than Master Li this day?
工人王师傅每小时加工45个零件，李师傅每小时加工52零件．如果他们都工作一天(按8小时计算)．王师傅这一天比李师傅少加工多少个零件？
<gadget id="calculator">52 - 45</gadget>
<output>7</output>

<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<result>56</result>