A factory needs to make 200 counters with a length of 4 meters, a width of 60 cm, and a height of 1 meter. If angle irons are installed on each side of these counters, how many meters of angle irons are needed in total?
一个工厂要做200个长4米，宽60厘米，高1米的柜台，要在这些柜台的各边都安上角铁，共需要多少米角铁？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 + (3/5) + 1</gadget>
<output>28/5 = around 5.6</output>

<gadget id="calculator">(28/5) * 4 * 200</gadget>
<output>4_480</output>

<result>4_480</result>