Eight years ago, the mother's age was three times that of her daughter's. This year, the combined age of mother and daughter is 56 years old. How old is mother this year?
8年前，妈妈的年龄是女儿的3倍，今年母女的年龄和是56岁．妈妈今年多少岁？
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">56 - 16</gadget>
<output>40</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">30 + 8</gadget>
<output>38</output>

<result>38</result>