A and B cooperate to process a batch of parts in 14 days. If A processes 2 days first, and then B processes 3 days, a total of (1/6) of the total is completed. It is known that B processes 7 fewer parts per day than A, how many parts are there in total?
甲、乙两人合作加工一批零件14天完成．若先由甲加工2天，再接着由乙加工3天，共完成总数的(1/6)．已知乙比甲每天少加工7个零件，这批零件共有多少个？
<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/14) * 2</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/6) - (1/7)</gadget>
<output>1/42 = around 0.02381</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">(1/42) / 1</gadget>
<output>1/42 = around 0.02381</output>

<gadget id="calculator">(1/14) - (1/42) - (1/42)</gadget>
<output>1/42 = around 0.02381</output>

<gadget id="calculator">7 / (1/42)</gadget>
<output>294</output>

<result>294</result>