My daughter is 12 years old this year (1994). The mother said to her daughter: "When you are my age, I will already be 60 years old!" Ask: When my mother was 12 years old, what year was it? How many
女儿今年(1994年)12岁．妈妈对女儿说："当你有我这么大岁数时，我已经60岁喽！"问：妈妈12岁时，是哪一年？多少
<gadget id="calculator">60 - 12</gadget>
<output>48</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">1_994 - 24</gadget>
<output>1_970</output>

<result>1_970</result>