Xiaokang is 1.42 meters tall, and his father is 0.34 meters taller than Xiaokang. The sum of the heights of Xiaokang and his father is twice the height of his mother. What is the height of his mother?
小康身高1.42米，爸爸比小康高0.34米，小康和爸爸身高的和是妈妈身高的2倍，妈妈的身高是多少？
<gadget id="calculator">1.42 + 0.34 + 1.42</gadget>
<output>3.18</output>

<gadget id="calculator">3.18 / 2</gadget>
<output>1.59</output>

<result>1.59</result>