Among the parts processed by Mr. Wang, 147 are qualified and 3 are unqualified. What is the pass rate?
王师傅加工的零件中，147个合格，3个不合格，合格率是多少．
<gadget id="calculator">147 + 3</gadget>
<output>150</output>

<gadget id="calculator">147 / 150</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>