There is a cuboid reservoir with a length of 3 meters, a width of 2 meters and a height of 1.2 meters. The water depth in the pool is 0.5 meters. How many square meters is the area in contact with water?
有一个长方体蓄水池，长3米、宽2米、高1.2米．水池里水深0.5米．与水接触的面积是多少平方米？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">3 * 0.5</gadget>
<output>1.5</output>

<gadget id="calculator">2 * 0.5</gadget>
<output>1</output>

<gadget id="calculator">1.5 + 1</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 * 2</gadget>
<output>5</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<result>11</result>