A cubic glass tank with a side length of 3 decimeters was filled with water. Li Ming poured all the water into a rectangular glass tank with a length of 5 decimeters, a width of 2 decimeters, and a height of 4.5 decimeters. What is the contact surface area with the glass cylinder?
一个棱长3分米的立方体玻璃缸中装满了水，李明将其中的水全部倒入了一个长5分米，宽2分米，高4.5分米的长方体玻璃缸中，这时水与玻璃缸的接触面面积是多少？
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">3 * 3 * (3/10)</gadget>
<output>27/10 = around 2.7</output>

<gadget id="calculator">5 * (27/10) * 2</gadget>
<output>27</output>

<gadget id="calculator">2 * (27/10) * 2</gadget>
<output>54/5 = around 10.8</output>

<gadget id="calculator">10 + 27 + (54/5)</gadget>
<output>239/5 = around 47.8</output>

<result>239/5 = around 47.8</result>