The newly bought house of Xiaoming's family needs to be renovated. The roof of the living room is a rectangle with a length of 600 cm and a width of 400 cm. If you want to paste wooden moldings on the corner of the roof of the living room, how many meters should the wooden moldings be at least?
小明家新买的房子要装修，客厅屋顶是一个长600厘米，宽400厘米的长方形．如果要在客厅屋顶墙角贴木线条，木线条至少要多少米？
<gadget id="calculator">600 + 400</gadget>
<output>1_000</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">1_000 * (1/50)</gadget>
<output>20</output>

<result>20</result>