This year is 2006, and the age of the grandfather is 10 times that of the grandson. In another 12 years, the age of the grandfather is 4 times that of the grandson. So how old is the grandson this year?
今年是2006年，爷爷年龄是孙子的10倍，再过12年，爷爷年龄是孙子的4倍，那么今年孙子是多少岁？
<gadget id="calculator">4 * 12</gadget>
<output>48</output>

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

<gadget id="calculator">10 - 4</gadget>
<output>6</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<result>6</result>