Use two 1.5-meter-long bamboo poles to measure the depth of the water in the pond. The junction of the bamboo poles is 0.25 meters, 0.8 meters are exposed on the water surface, and the part that enters the mud is 0.35 meters. How many meters is the water depth?
用两根1.5米长的竹竿接起来测量水塘内水的深度，其中竹竿接处0.25米，水面上露着0.8米，入泥部分0.35米，水深多少米？
<gadget id="calculator">1.5 * 2</gadget>
<output>3</output>

<gadget id="calculator">0.25 + 0.8 + 0.35</gadget>
<output>1.4</output>

<gadget id="calculator">3 - 1.4</gadget>
<output>1.6</output>

<result>1.6</result>