There are 23 boys and 27 girls in the class. Each person pays 37 yuan for textbooks. How much does it cost in total?
班上共有男生23人，女生27人，每人交课本费37元，一共要交多少钱．
<gadget id="calculator">23 + 27</gadget>
<output>50</output>

<gadget id="calculator">50 * 37</gadget>
<output>1_850</output>

<result>1_850</result>