Master Li processes 49 parts per hour, and Master Zhang processes 54 parts per hour. They each work for 8 hours. How many fewer parts does Master Li make than Master Zhang?
李师傅每小时加工零件49个，张师傅每小时加工零件54个，两人各做8小时，李师傅比张师傅少做多少个？
<gadget id="calculator">54 - 49</gadget>
<output>5</output>

<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<result>40</result>