The output of cotton is 4.87 million tons, the output of tea is 4.09 million tons less than that of cotton, and the output of early rice is 38.66 million tons more than that of tea. How many tons is the output of early rice?
棉花产量是487万吨，茶叶产量比棉花产量少409万吨，早稻产量比茶叶多3866万吨．早稻产量是多少万吨？
<gadget id="calculator">487 - 409</gadget>
<output>78</output>

<gadget id="calculator">78 + 3_866</gadget>
<output>3_944</output>

<result>3_944</result>