The electronic instrument factory originally produced 200 parts per day, with a pass rate of 85%. After technological innovation, the passing rate is 98%. It is known that there are 21 more unqualified parts per day than now, how many qualified parts are produced every day now?
电子仪器厂原来每天生产200个零件，合格率为85%．技术革新后，合格率为98%．已知原来每天不合格的零件比现在多21个，现在每天生产合格零件多少个？
<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">200 * (3/20)</gadget>
<output>30</output>

<gadget id="calculator">30 - 21</gadget>
<output>9</output>

<gadget id="calculator">98 / 100</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">1 - (49/50)</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">9 / (1/50)</gadget>
<output>450</output>

<gadget id="calculator">450 * (49/50)</gadget>
<output>441</output>

<result>441</result>