To spread a layer of sand 4 cm thick on a rectangular piece of land 50 meters long and 32 meters wide, how many times does it take a car to transport 1.6 cubic meters of sand each time?
要在一块长50米，宽32米的长方形地上铺一层厚4厘米的沙土，一辆车每次运来1.6立方米的沙土，至少需要运多少次？
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">(1/25) / 1.6</gadget>
<output>0.025</output>

<gadget id="calculator">50 * 32 * 0.025</gadget>
<output>40</output>

<result>40</result>