The number that is 1.6 less than twice the number is 13.64.
比多少的2倍还少1.6的数是13.64．
<gadget id="calculator">13.64 + 1.6</gadget>
<output>15.24</output>

<gadget id="calculator">15.24 / 2</gadget>
<output>7.62</output>

<result>7.62</result>