The floor of a house is 8 meters long and 4 meters wide, and the floor is paved with tiles of 16 square decimeters each. How many such tiles are needed in total?
一间房屋的地面长8米，宽4米，用每块16平方分米的瓷砖铺地面，一共要多少块这样的瓷砖？
<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">40 / 16</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">80 * (5/2)</gadget>
<output>200</output>

<result>200</result>