Xiao Ming was 1.14 meters tall when he was 8 years old, and 1.5 meters tall when he was 12 years old. How many meters does he grow each year on average?
小明8周岁时身高是1.14米，12周岁时身高是1.5米．他平均每年长高多少米？
<gadget id="calculator">1.5 - 1.14</gadget>
<output>0.36</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">0.36 / 4</gadget>
<output>0.09</output>

<result>0.09</result>