To pave a hall floor, 108 square bricks with an area of 0.25 square meters are needed. If square bricks with a side length of 0.6 meters are used instead, how many square bricks can be used less? (proportional solution)
铺一块大厅地面，用面积是0.25平方米的方砖要108块，如果改用边长为0.6米的方砖，可以少用多少块？(比例解)
<gadget id="calculator">108 * 0.25</gadget>
<output>27</output>

<gadget id="calculator">0.6 * 0.6</gadget>
<output>0.36</output>

<gadget id="calculator">27 / 0.36</gadget>
<output>75</output>

<gadget id="calculator">108 - 75</gadget>
<output>33</output>

<result>33</result>