The engineering team is going to lay a 1600-meter cement road, which has been laid (2/5), how many meters have been laid?
工程队要铺设一条1600米的水泥路，已经铺设了(2/5)，已经铺设了多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1_600 * (2/5)</gadget>
<output>640</output>

<result>640</result>