When Li Hua walked 80% of the way from home to school, he happened to arrive at the Children's Palace. When he returned from the original road from school, he traveled (1/3) of the whole journey and passed (1/5) kilometers from the Children's Palace. How many kilometers is it to the school?
李华从家到学校，行了全程的80%时，正好到少年宫，他从学校原路返回时，行了全程的(1/3)就超过了少年宫(1/5)千米，他家到学校有多少千米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(1/5) / (2/15)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>