The store should have a glass window with a length of 2.5 meters, a width of 50 cm, and a height of 80 cm. Now it is necessary to inlay aluminum alloy frames on all sides of the glass window. How many meters of aluminum alloy frames are needed for this window?
商店要做一个长2.5米，宽50厘米，高80厘米的玻璃橱窗．现在要在玻璃橱窗的各边镶上铝合金框，这个橱窗需要多少米铝合金框？
<gadget id="calculator">2.5 * 100</gadget>
<output>250</output>

<gadget id="calculator">250 + 50 + 80</gadget>
<output>380</output>

<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">380 * (1/25)</gadget>
<output>76/5 = around 15.2</output>

<result>76/5 = around 15.2</result>