square with a side length of 5 decimeters, how many small squares with a side length of 1 centimeter can be placed.
一个正方形，边长是5分米，摆边长1分的小正方形，能摆多少个．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>