Xiangyang Primary School bought some flowers. If 4 pots are placed in each classroom, 30 classrooms can be placed. If 5 pots are placed in each classroom, how many classrooms can be placed?
向阳小学购买了一些花．如果每间教室放4盆，可以放30间教室．如果每间教室放5盆，可以放多少间教室．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">30 * (4/5)</gadget>
<output>24</output>

<result>24</result>