A cable was erected for 1.6 kilometers on the first day, which was less (1/9) than on the second day. How many kilometers was erected on the second day?
架一条电缆，第一天架了1.6千米，比第二天少架(1/9)，第二天架了多少千米？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">1.6 / (8/9)</gadget>
<output>1.8</output>

<result>1.8</result>