The living room of Xiaoming’s house is 6 meters long and 4 meters wide. Now we are going to lay square floor tiles with a side length of 40 centimeters. Each piece is 4 yuan. How much will it cost?
小明家的客厅长6米，宽4米，现在准备要铺边长为40厘米的正方形地砖，每块4元，共需多少钱？
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">0.4 * 0.4</gadget>
<output>0.16</output>

<gadget id="calculator">24 / 0.16</gadget>
<output>150</output>

<gadget id="calculator">150 * 4</gadget>
<output>600</output>

<result>600</result>