Three times the number is 12 more than 40% of 20. What is this number?
个数的3倍比20的40%多12，这个数是多少？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 * (2/5)</gadget>
<output>8</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<gadget id="calculator">20 / 3</gadget>
<output>20/3 = around 6.666667</output>

<result>20/3 = around 6.666667</result>