If a house is paved with square bricks, 480 square bricks with an area of 0.09m**2 are needed. If the floor is paved with square bricks with a side length of 0.4m, how many bricks are needed?
一间房子用方砖铺地，用面积为0.09m**2的方砖需480块，如果改用边长0.4m的方砖铺地，需多少块？
<gadget id="calculator">0.09 * 480</gadget>
<output>43.2</output>

<gadget id="calculator">0.4 ** 2</gadget>
<output>0.16</output>

<gadget id="calculator">43.2 / 0.16</gadget>
<output>270</output>

<result>270</result>