Dad's age this year is four times that of Xiaoqiang's. Xiaoqiang is 27 years younger than his father. How old is his father this year?
爸爸今年的年龄是小强的4倍，小强比爸爸小27岁，爸爸今年多少岁．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">27 / 3</gadget>
<output>9</output>

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

<result>36</result>