There are 378 boys and 356 girls in the first grade of the experimental primary school. There are 597 people who have had a physical examination, how many people have not had a physical examination?
实验小学一年级有男生378人，女生356人．已经体检的有597人，没体检的有多少人？
<gadget id="calculator">378 + 356</gadget>
<output>734</output>

<gadget id="calculator">734 - 597</gadget>
<output>137</output>

<result>137</result>