Master Wang produced 200 parts, and 2 failed after inspection. The number of qualified parts is the total number of parts.
王师傅生产200个零件，经检验有2个不合格，合格的零件个数是零件总数的多少．
<gadget id="calculator">200 - 2</gadget>
<output>198</output>

<gadget id="calculator">198 / 200</gadget>
<output>99/100 = around 0.99</output>

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

<gadget id="calculator">(99/100) * 1</gadget>
<output>99/100 = around 0.99</output>

<result>99/100 = around 0.99</result>