The floor of a room is rectangular, 7.2 meters long and 4.8 meters wide. How many square bricks with a side length of 8 decimeters are needed to pave the floor?
一个房间的地面是长方形，长7.2米，宽4.8米．用边长8分米的方砖铺地，需要多少块？
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * (4/5)</gadget>
<output>16/25 = around 0.64</output>

<gadget id="calculator">4.8 / (16/25)</gadget>
<output>7.5</output>

<gadget id="calculator">7.2 * 7.5</gadget>
<output>54</output>

<result>54</result>