How many meters of angle iron are needed to weld a frame to a cuboid counter with a length of 70cm, a width of 50cm, and a height of 80cm?
给一个长70cm、宽50cm、高80cm的长方体柜台焊上框架，需要多少米的角铁？
<gadget id="calculator">70 + 50 + 80</gadget>
<output>200</output>

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

<gadget id="calculator">200 * (1/25)</gadget>
<output>8</output>

<result>8</result>