A classroom is 8 meters long and 6 meters wide. To pave the ground with square bricks with an area of 0.64 square meters, how many square bricks are needed at least?
一间长8米，宽6米的教室．用面积是0.64平方米的方砖铺地面，至少需要方砖多少块？
<gadget id="calculator">6 / 0.64</gadget>
<output>9.375</output>

<gadget id="calculator">8 * 9.375</gadget>
<output>75</output>

<result>75</result>