Evaluation: 10: x=(9/2):16.
求值：10：x=(9/2)：16．
<gadget id="calculator">10 * 16</gadget>
<output>160</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">160 / (9/2)</gadget>
<output>320/9 = around 35.555556</output>

<result>320/9 = around 35.555556</result>