The number 12 more than 80% of a number is 45.6, what is the number?
比一个数的80%多12的数是45.6，求这个数是多少？
<gadget id="calculator">45.6 - 12</gadget>
<output>33.6</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">33.6 / (4/5)</gadget>
<output>42</output>

<result>42</result>