The students are practicing gymnastics. There are 32 people in each row, and there are 21 rows. How many students are practicing in total?
同学们进行体操演练，每排32人，有21排，一共有多少名同学进行演练？
<gadget id="calculator">32 * 21</gadget>
<output>672</output>

<result>672</result>