The father is 32 years old this year, which is 8 times the age of the son, and how many years later the age of the father is 5 times the age of the son.
父亲今年32岁，是儿子年龄的8倍，再过多少年父亲的年龄是儿子的5倍．
<gadget id="calculator">32 / 8</gadget>
<output>4</output>

<gadget id="calculator">32 - 4</gadget>
<output>28</output>

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

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

<gadget id="calculator">7 - 4</gadget>
<output>3</output>

<result>3</result>