A cuboid water tank is 6 decimeters long and 5 decimeters wide from the inside. First pour 82 liters of water into it, and then immerse it in a cube iron block with a length of 2 decimeters. At this time, the water surface is 1 decimeter away from the mouth of the water tank. The volume of the water tank is How many?
一个长方体水箱，从里面量长6分米，宽5分米，先倒入82升水，再浸入一块长2分米的正方体铁块，这时水面离水箱口1分米，这个水箱的容积是多少？
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">6 * 5 * 1</gadget>
<output>30</output>

<gadget id="calculator">82 + 8 + 30</gadget>
<output>120</output>

<result>120</result>