After subtracting (1/3) from a number, subtract the remaining half, the difference is 12, find the number.
一个数减去它的(1/3)后，再减去余下的一半，差是12，求该数．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">12 / (1/2)</gadget>
<output>24</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">24 / (2/3)</gadget>
<output>36</output>

<result>36</result>