worker produces a kind of parts, 196 are qualified and 4 are unqualified, what is the qualified rate of the parts.
某工人生产了一种零件，合格的有196个，不合格的4个，零件的合格率是多少．
<gadget id="calculator">196 + 4</gadget>
<output>200</output>

<gadget id="calculator">196 / 200</gadget>
<output>49/50 = around 0.98</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(49/50) * 1</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>