The father is 32 years old this year, and the son is 8 years old this year. After 4 years, how many times the age of the father will be the son.
爸爸今年32岁，儿子今年8岁，4年后，爸爸的岁数是儿子的多少倍．
<gadget id="calculator">32 + 4</gadget>
<output>36</output>

<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<result>3</result>