The swimming pool fills an empty swimming pool with a length of 50 meters, a width of 2.5 meters and a depth of 1.6 meters. After 0.6 hours, the water depth reaches 0.2 meters. In this case, how many hours can it be filled?
游泳馆向一个长50米，宽2.5米，深1.6米的空游泳池里注水．经过0.6小时后，水深达0.2米，这样的话，几小时能注满？
<gadget id="calculator">50 * 2.5 * 1.6</gadget>
<output>200</output>

<gadget id="calculator">50 * 2.5 * 0.2</gadget>
<output>25</output>

<gadget id="calculator">200 / 25</gadget>
<output>8</output>

<gadget id="calculator">8 * 0.6</gadget>
<output>4.8</output>

<result>4.8</result>