The average height of Xiaoming, Xiaohong and Xiaojun is 1.25 meters, the average height of Xiaohong and Xiaoming is 1.24 meters, how many meters is Xiaojun's height?
小明、小红、小军三人的平均身高是1.25米，小红和小明的平均身高是1.24米，小军的身高是多少米．
<gadget id="calculator">1.25 * 3</gadget>
<output>3.75</output>

<gadget id="calculator">1.24 * 2</gadget>
<output>2.48</output>

<gadget id="calculator">3.75 - 2.48</gadget>
<output>1.27</output>

<result>1.27</result>