Wang Fei weighed 3.65 kilograms when he was born, and after 3 months his weight was 8 kilograms. How many kilograms does he grow each month on average?
王飞出生时重3.65千克，3个月以后他的体重是8千克，他平均每个月长多少千克？
<gadget id="calculator">8 - 3.65</gadget>
<output>4.35</output>

<gadget id="calculator">4.35 / 3</gadget>
<output>1.45</output>

<result>1.45</result>