classroom is 6 meters wide, and its length is 1.25 times its width. How many square meters does this classroom occupy?
一间课室，宽6米，长是宽的1.25倍，这间教室占地多少平方米？
<gadget id="calculator">6 * 1.25</gadget>
<output>7.5</output>

<gadget id="calculator">6 * 7.5</gadget>
<output>45</output>

<result>45</result>