The floor of the school conference room is 12 meters long and 8 meters wide. If 4 square decimeters are laid on the ground, how many such squares are needed?
学校会议室地面的长12米，宽是8米，如果在地面上铺4平方分米方块，需要这样的方块多少块？
<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">12 * 8 * 25</gadget>
<output>2_400</output>

<result>2_400</result>