workshop produces a batch of parts, and the unqualified products are tested for the first time (1/14). Later, 12 unqualified products are found out of the qualified products. At this time, the unqualified products are qualified products (1/14) /12). How many parts were produced in total on this day?
某车间生产一批零件，第一次检测不合格产品的合格产品的(1/14)，后来又从合格的产品中发现有12个不合格的，这时不合格产品是合格产品的(1/12)．这一天一共生产了多少个零件？
<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<gadget id="calculator">1 / 13</gadget>
<output>1/13 = around 0.076923</output>

<gadget id="calculator">14 + 1</gadget>
<output>15</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/13) - (1/15)</gadget>
<output>2/195 = around 0.010256</output>

<gadget id="calculator">12 / (2/195)</gadget>
<output>1_170</output>

<result>1_170</result>