Kobayashi's room decoration. The living room is 8 meters long and 4 meters wide. How many floor tiles are needed if a floor tile with a side length of 8 decimeters is to be laid?
小林家装修房间．客厅长8米，宽4米．如果要铺上边长8分米的地砖，一共需要多少块地砖．
<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 / (16/25)</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">8 * (25/4)</gadget>
<output>50</output>

<result>50</result>