Li Hua travels to a certain place by bicycle. On the first day, he travels 40% of the whole journey, on the second day he travels 20 kilometers, and on the third day he travels 1/3 of the whole journey. How many kilometers is the journey? ?
李华骑自行车到某地旅游，第一天行了全程的40%，第二天行了20千米，第三天行了全程的(1/3)，正好行完，全程有多少千米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">1 - (2/5) - (1/3)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">20 / (4/15)</gadget>
<output>75</output>

<result>75</result>