Lao Li has already traveled 7.5 kilometers from his home to the county seat by bicycle, which is equivalent to (3/8) of the whole journey. How many kilometers is it from Xiaofang's home to the county seat?
老李骑车从家出发到县城，已经行了7.5千米，相当于全程的(3/8)，小方家到县城有多少千米？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">7.5 / (3/8)</gadget>
<output>20</output>

<result>20</result>