Use a bamboo pole to measure the water storage depth of the pool. Insert a 3-meter-long bamboo pole straight into the water. The part of the human mud is 0.35 meters, and the part above the water is 0.53 meters. What is the water storage depth of the pool?
用竹竿测量水池蓄水的深度，把3米长的竹竿直插入水中，人泥部分是0.35米，露出水面部分是0.53米，水池蓄水深度是多少？
<gadget id="calculator">3 - 0.35 - 0.53</gadget>
<output>2.12</output>

<result>2.12</result>