classroom in Hope Primary School is 8.5 meters long and 6.5 meters wide. It is planned to use square bricks with an area of 25 square decimeters to pave the floor. How many square bricks are needed for a classroom?
希望小学的一间教室长8.5米，宽6.5米，准备用面积为25平方分米的方砖铺地，一间教室需要多少块方砖？
<gadget id="calculator">6.5 / 0.25</gadget>
<output>26</output>

<gadget id="calculator">8.5 * 26</gadget>
<output>221</output>

<result>221</result>