Master Wang processed 50 parts a day, and the qualified rate was 98%. How many parts are qualified?
王师傅一天加工了50个零件，合格率为98%，合格的零件有多少个．
<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">50 * (49/50)</gadget>
<output>49</output>

<result>49</result>