The mother is 27 years older than the daughter. Next year, the mother will be four times as old as the daughter. How old is the daughter this year?
妈妈比女儿大27岁，明年妈妈的岁数正好是女儿的4倍，今年女儿多少岁？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">9 - 1</gadget>
<output>8</output>

<result>8</result>