Xiaohua's father is 1.8 meters tall, Xiaohua is 0.5 meters shorter than his father, Xiaohua's mother is 0.3 meters taller than Xiaohua, how tall is Xiaohua's mother?
小华的爸爸身高1.8米，小华比爸爸矮0.5米，小华的妈妈比小华高0.3米，小华的妈妈高多少米？
<gadget id="calculator">1.8 - 0.5</gadget>
<output>1.3</output>

<gadget id="calculator">1.3 + 0.3</gadget>
<output>1.6</output>

<result>1.6</result>