If a house is paved with square bricks, 64 square bricks with an area of 0.25m**2 are needed. If square bricks with a side length of 0.8 meters are used instead, how many square bricks are needed?
一间房子用方砖铺地，用面积为0.25m**2的方砖需要64块，如果改用边长为0.8米的方砖，需要多少块？
<gadget id="calculator">0.25 * 64</gadget>
<output>16</output>

<gadget id="calculator">0.8 ** 2</gadget>
<output>0.64</output>

<gadget id="calculator">16 / 0.64</gadget>
<output>25</output>

<result>25</result>