Two masters, A and B, cooperate to process a batch of parts. A works for 3 hours to complete (1/4) of this batch of parts. Later, B joins in, and the two work together for 5 hours to complete the processing task of this batch of parts. 24 parts are processed per hour. How many parts are there in this batch?
甲乙两师傅合作加工一批零件，甲先工作3小时，完成这批零件的(1/4)，后来乙加入，两人又共同工作5小时，完成了这批零件的加工任务，如果乙每小时加工零件24个，这批零件一共有多少个？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / 5</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">3 / (1/4)</gadget>
<output>12</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(3/20) - (1/12)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / (1/15)</gadget>
<output>15</output>

<gadget id="calculator">24 * 15</gadget>
<output>360</output>

<result>360</result>