Dad is 1.74 meters tall, and mother is 1.5 meters tall. Xiao Ming is as tall as his mother when he steps on a rock, and his mother is as tall as his father when he steps on this rock. How many meters is Xiao Ming's height?
爸爸身高1.74米，妈妈身高1.5米，小明踩在一块石头上与妈妈一样高，妈妈踩在这块石头上与爸爸一样高．小明身高是多少米．
<gadget id="calculator">1.74 - 1.5</gadget>
<output>0.24</output>

<gadget id="calculator">1.5 - 0.24</gadget>
<output>1.26</output>

<result>1.26</result>