Lele's bedroom is 56 decimeters long and 32 decimeters wide. The floor is paved with square floor tiles with a side length of 8 decimeters. How many such floor tiles are needed?
乐乐的卧室长56分米，宽32分米，用边长是8分米的正方形地砖铺地，需要这样的地砖多少块．
<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">32 / 64</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">56 * (1/2)</gadget>
<output>28</output>

<result>28</result>