Calculation: 0.01992/0.004*(1/2000)=how much.
计算：0.01992/0.004*(1/2000)=多少．
<gadget id="calculator">0.01992 / 0.004</gadget>
<output>4.98</output>

<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>

<gadget id="calculator">4.98 * (1/2_000)</gadget>
<output>0.00249</output>

<result>0.00249</result>