The age of the big cow 12 years ago is 9 times the age of the calf, and the age of the big cow 16 years later is twice the age of the calf. So, how many times is the age of the big cow now the age of the little cow?
大牛12年前的年龄是小牛年龄的9倍，16年后大牛的年龄是小牛年龄是2倍．那么，现在大牛的年龄是小牛年龄的几倍？
<gadget id="calculator">12 + 16</gadget>
<output>28</output>

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<gadget id="calculator">28 / 7</gadget>
<output>4</output>

<gadget id="calculator">4 * 9</gadget>
<output>36</output>

<gadget id="calculator">36 + 12</gadget>
<output>48</output>

<gadget id="calculator">4 + 12</gadget>
<output>16</output>

<gadget id="calculator">48 / 16</gadget>
<output>3</output>

<result>3</result>