Master Zhang processes 42 parts per hour, and Master Li processes 27 parts per hour, three times more than Master Zhang. How many parts does Master Li process per hour?
张师傅每小时加工42个零件，李师傅每小时加工的比张师傅的3倍还多27个，李师傅每小时加工多少个零件？
<gadget id="calculator">42 * 3</gadget>
<output>126</output>

<gadget id="calculator">126 + 27</gadget>
<output>153</output>

<result>153</result>