80% of a number is 12 less than its (5/6), what is this number?
一个数的80%比它的(5/6)少12，这个数是多少？
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">12 / (1/30)</gadget>
<output>360</output>

<result>360</result>