Calculation: (1/5)x+16=25.
计算：(1/5)x+16=25．
<gadget id="calculator">25 - 16</gadget>
<output>9</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">9 / (1/5)</gadget>
<output>45</output>

<result>45</result>