Master Zhang wants to process a batch of parts. He has already processed 4.5 hours, an average of 32 parts per hour, and there are still 36 parts that have not been processed. How many parts are there in this batch?
张师傅要加工一批零件，已经加工4.5小时，平均每小时加工32个零件，还有36个零件未加工，这批零件有多少个？
<gadget id="calculator">32 * 4.5</gadget>
<output>144</output>

<gadget id="calculator">144 + 36</gadget>
<output>180</output>

<result>180</result>