A worker produced 196 qualified parts and 4 unqualified parts in one day. What is the pass rate of the parts he produced on this day?
某工人一天生产了196个合格零件，4个不合格零件，这天他生产的零件合格率是多少．
<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>