A ship sails from port A to port B, and has traveled the entire distance (3/5). It is still 80 kilometers away from port B. How many kilometers has it traveled? What is the correct column
一艘轮船从甲港开往乙港，已行了全程的(3/5)，距乙港还有80千米，已行了多少千米？正确列式是多少
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<gadget id="calculator">200 - 80</gadget>
<output>120</output>

<result>120</result>