The master and the apprentice process a batch of parts at the same time, and complete the task in 4 hours. It is known that the master processes 12 per hour, and the apprentice processes 10 per hour. After completing the task, the number of parts processed by the master accounts for the total number of parts. Several?
师徒两人同时加工一批零件，4小时完成任务，已知师傅每小时加工12个，徒弟每小时加工10个，问完成任务后，师傅加工的零件数占零件总个数的几分之几？
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">48 + 40</gadget>
<output>88</output>

<gadget id="calculator">48 / 88</gadget>
<output>6/11 = around 0.545455</output>

<result>6/11 = around 0.545455</result>