For group gymnastics rehearsal at school, if there are 25 people in each row, 16 rows can be arranged; if it is changed to 20 rows, how many people should be arranged in each row?
学校排练团体操，如每行25人，可以排16行；如果改成排20行，每行应排几人？
<gadget id="calculator">16 / 20</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">25 * (4/5)</gadget>
<output>20</output>

<result>20</result>