Obviously walk (13/14) kilometers in (3/10) hours, what is the formula for how many hours he needs to walk 1 kilometer
明明(3/10)小时步行(13/14)千米，他步行1千米需要多少小时的算式是多少
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">13 / 14</gadget>
<output>13/14 = around 0.928571</output>

<gadget id="calculator">(3/10) / (13/14)</gadget>
<output>21/65 = around 0.323077</output>

<result>21/65 = around 0.323077</result>