There are 20 boys in Class 1 of the third grade, and there are 5 fewer boys than girls. How many people are there in Class 1 of the third grade?
三年级1班有男生20人，男生比女生少5人，三年级1班有共有多少人．
<gadget id="calculator">20 + 5</gadget>
<output>25</output>

<gadget id="calculator">20 + 25</gadget>
<output>45</output>

<result>45</result>