Master Wang planned to process 120 parts on September 6, but actually processed 7/12 of the total in the morning, 38 in the afternoon and 42 in the evening. In this way, what percentage of Master Wang's overfulfilled task this day?
王师傅计划9月6日加工120个零件，实际这天上午加工了总数的(7/12)，下午加工了38个，晚上加工了42个．这样王师傅这一天超额完成任务的百分之几？
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">120 * (7/12)</gadget>
<output>70</output>

<gadget id="calculator">70 + 38 + 42</gadget>
<output>150</output>

<gadget id="calculator">150 - 120</gadget>
<output>30</output>

<gadget id="calculator">30 / 120</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>