When a number is divided by 16, the quotient is (4/5). What is this number?
一个数除16，商是(4/5)，这个数是多少？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">16 / (4/5)</gadget>
<output>20</output>

<result>20</result>