A classroom should be paved with square bricks. 270 square bricks with an area of 0.16 square meters are needed. If the square bricks with a side length of 0.3 meters are used instead, how many square bricks are needed?
一间教室要用方砖铺地．用面积是0.16平方米的方砖需要270块，如果改用边长是0.3米的方砖，需要多少块．
<gadget id="calculator">0.16 * 270</gadget>
<output>43.2</output>

<gadget id="calculator">0.3 * 0.3</gadget>
<output>0.09</output>

<gadget id="calculator">43.2 / 0.09</gadget>
<output>480</output>

<result>480</result>