Master Wang produced a batch of parts, and the unqualified products were qualified products (1/19). Later, 3 unqualified products were found from the qualified products. At this time, the qualified rate of the products was calculated to be 94%. How many qualified products are there?
王师傅生产一批零件，不合格产品是合格产品的(1/19)，后来从合格产品中又发现3个不合格产品，这时算出产品的合格率是94%．合格产品共有几个？
<gadget id="calculator">1 + 19</gadget>
<output>20</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">94 / 100</gadget>
<output>47/50 = around 0.94</output>

<gadget id="calculator">1 - (1/20) - (47/50)</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">3 / (1/100)</gadget>
<output>300</output>

<gadget id="calculator">300 * (47/50)</gadget>
<output>282</output>

<result>282</result>