ramen master in Lanzhou made noodles in this way: Knead a piece of dough into a cylindrical noodle stick with a length of 1.5 meters, then align it; 1/20), what is the total length of the thin noodles pulled out at the end?
兰州一位拉面师傅是这样做面的：将一个面团搓成圆柱形面棍，长1.5米，然后对齐；再拉到1.5米…这样反复下去，最后拉出的面条粗细只有原来面棍的(1/20)，最后拉出的细面条总共有多长？
<gadget id="calculator">1 / 400</gadget>
<output>1/400 = around 0.0025</output>

<gadget id="calculator">1.5 / (1/400)</gadget>
<output>600</output>

<result>600</result>