Xiaoming's living room is 8 meters long and 4 meters wide, and the floor is paved with floor tiles with an area of 64 square decimeters. How many floor tiles are needed?
小明家客厅长8米，宽4米，用面积是64平方分米的地砖铺地，需要多少块地板砖．
<gadget id="calculator">4 / 0.64</gadget>
<output>6.25</output>

<gadget id="calculator">8 * 6.25</gadget>
<output>50</output>

<result>50</result>