Five tenths of a number is 1.65, find this number.
一个数的十分之五是1.65，求这个数．
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1.65 / (1/2)</gadget>
<output>3.3</output>

<result>3.3</result>