Two ships, A and B, sail from port A to port B at the same time. Ship A travels 36.5 kilometers per hour, and ship B travels 40.2 kilometers per hour. After 2 hours, how many kilometers are the distance between the two ships?
甲乙两船同时从A港开往B港．甲船每小时行36.5千米，乙船每小时行40.2千米．2小时后，两船相距多少千米．
<gadget id="calculator">40.2 - 36.5</gadget>
<output>3.7</output>

<gadget id="calculator">3.7 * 2</gadget>
<output>7.4</output>

<result>7.4</result>