20 is 2 more than (2/3) of a number, what is this number?
20比一个数的(2/3)多2，这个数是多少？
<gadget id="calculator">20 - 2</gadget>
<output>18</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 / (2/3)</gadget>
<output>27</output>

<result>27</result>