75% of a number is 2.5 more than its (2/3), what is this number? (solution by equation)
一个数的75%比它的(2/3)多2.5，这个数是多少？(用方程解)
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">2.5 / (1/12)</gadget>
<output>30</output>

<result>30</result>