Calculation: 2.1-(1/2)*1.6/8.
计算：2.1-(1/2)*1.6/8．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1.6 / 8</gadget>
<output>0.2</output>

<gadget id="calculator">(1/2) * 0.2</gadget>
<output>0.1</output>

<gadget id="calculator">2.1 - 0.1</gadget>
<output>2</output>

<result>2</result>