The qualification rate of a batch of parts is 96%, and there are 50 parts in this batch. How many failed.
一批零件的合格率是96%，这批零件共有50个．不合格的有多少个．
<gadget id="calculator">96 / 100</gadget>
<output>24/25 = around 0.96</output>

<gadget id="calculator">50 * (24/25)</gadget>
<output>48</output>

<gadget id="calculator">50 - 48</gadget>
<output>2</output>

<result>2</result>