Dad's height is 1.7 meters, 0.3 meters taller than Xiaoqiang, how many meters is Xiaoqiang's height?
爸爸的身高是1.7米，比小强高0.3米，小强的身高是多少米？
<gadget id="calculator">1.7 - 0.3</gadget>
<output>1.4</output>

<result>1.4</result>