The engineering team laid a sewer pipe, laying 43.5 meters per day. It has been paved for 38 days, and the remaining full length (4/7) has not been laid. How long is this sewer pipe?
工程队铺设一条下水管道，每天铺43.5米，已经铺了38天，还剩下全长的(4/7)没有铺设，这条下水管道长多少米？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 - (4/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">38 / (3/7)</gadget>
<output>266/3 = around 88.666667</output>

<gadget id="calculator">43.5 * (266/3)</gadget>
<output>3_857</output>

<result>3_857</result>