There are 203 students in the third grade, and 16 fewer students in the fourth grade than in the third grade. How many people are there in the two grades?
三年级有203人，四年级比三年级少16人，两个年级共有多少人？
<gadget id="calculator">203 - 16</gadget>
<output>187</output>

<gadget id="calculator">187 + 203</gadget>
<output>390</output>

<result>390</result>