The total age of Xiaoying and her father is 53 years old. Xiaoying's age is 4 times older than her father's age by 2 years. How old is the age difference between Xiaoying and her father?
小英与爸爸的年龄一共是53岁，小英年龄的4倍比爸爸的年龄多2岁，小英与爸爸的年龄相差多少岁？
<gadget id="calculator">53 + 2</gadget>
<output>55</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">55 / 5</gadget>
<output>11</output>

<gadget id="calculator">11 * 4</gadget>
<output>44</output>

<gadget id="calculator">44 - 2</gadget>
<output>42</output>

<gadget id="calculator">42 - 11</gadget>
<output>31</output>

<result>31</result>