There are 637 boys in Dongming Primary School, and 20 more girls than boys. How many students are there in Dongming Primary School?
东明小学有男生637人，女生比男生多20人，东明小学共有学生多少人？
<gadget id="calculator">637 + 20 + 637</gadget>
<output>1_294</output>

<result>1_294</result>