The distance from city A to city B is 300 kilometers. A truck departs from city A to deliver goods to city B. It travels the whole distance (2/5) in the first hour, and travels the whole distance (1/3) in the second hour. ), how many kilometers away from city B?
A城到B城的距离为300千米，一辆货车从A城出发，往B城运货，第一小时行了全程的(2/5)，第二小时行了全程的(1/3)，这时离B城还有多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) + (1/3)</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">1 - (11/15)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">300 * (4/15)</gadget>
<output>80</output>

<result>80</result>