Xiaoxiao’s living room is 7 meters long and 4 meters wide. How many square bricks with a side length of 50 centimeters are going to be used to pave the floor?
笑笑家的客厅长7米，宽4米，准备要用边长为50厘米的正方形砖铺地，需要多少块？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * (1/2)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4 / (1/4)</gadget>
<output>16</output>

<gadget id="calculator">7 * 16</gadget>
<output>112</output>

<result>112</result>