(1/3) of a number is 15.6 less than 40% of this number, what is this number?
一个数的(1/3)比这个数的40%少15.6，这个数是多少？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(2/5) - (1/3)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">15.6 / (1/15)</gadget>
<output>234</output>

<result>234</result>