The canteen is going to make a glass counter with a length of 200 cm, a width of 50 cm, and a height of 60 cm. Angle irons are installed on all sides. How many meters of angle irons are needed for this counter?
小卖部要做一个长200厘米，宽50厘米，高60厘米的玻璃柜台各边都安上角铁，这个柜台需要多少米角铁？
<gadget id="calculator">200 + 50 + 60</gadget>
<output>310</output>

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

<gadget id="calculator">310 * (1/25)</gadget>
<output>62/5 = around 12.4</output>

<result>62/5 = around 12.4</result>