A cuboid fish pond with a length of 10 meters, a width of 8 meters and a depth of 2 meters is to be built in the park. If cement is applied to the inner wall and bottom of the fish pond, 0.8 square meters can be applied per kilogram of cement. How many kilograms of cement will be needed in total?
公园里要修一个长10米，宽8米，深2米的长方体鱼池，如果在鱼池的内壁和底面抹上水泥，每千克水泥可以抹0.8平方米，一共需要多少千克水泥？
<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">80 + 16 + 20</gadget>
<output>116</output>

<gadget id="calculator">116 * 2</gadget>
<output>232</output>

<gadget id="calculator">232 - 80</gadget>
<output>152</output>

<gadget id="calculator">152 * 0.8</gadget>
<output>121.6</output>

<result>121.6</result>