Master Wang finished processing a batch of parts in two days, processed (3/8) on the first day, packed 3 boxes and left 12 pieces, and packed 6 boxes of the parts processed on the second day together with the rest of the first day. How many parts are there.
王师傅两天加工完一批零件，第一天加工了(3/8)，装了3箱还余下12个，第二天加工的零件连同第一天余下的正好装了6箱，这批零件共多少个．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">6 * (3/8)</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3 * (3/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">(9/8) - 3</gadget>
<output>-15/8 = around -1.875</output>

<gadget id="calculator">(9/4) + (-15/8)</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">12 / (3/8)</gadget>
<output>32</output>

<gadget id="calculator">9 * 32</gadget>
<output>288</output>

<result>288</result>