(2/5) of a certain number is 0.4 more than 2 times of 4.8, what is this number?
某数的(2/5)比4.8的2倍多0.4，这个数是多少？
<gadget id="calculator">4.8 * 2</gadget>
<output>9.6</output>

<gadget id="calculator">9.6 + 0.4</gadget>
<output>10</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 / (2/5)</gadget>
<output>25</output>

<result>25</result>