Two ships sail opposite each other from Shanghai and Wuhan. The ship from Wuhan travels 26 kilometers per hour, and the ship from Shanghai travels 17 kilometers per hour. After 25 hours, the two ships meet. How many kilometers is the waterway from Shanghai to Wuhan?
两艘轮船从上海和武汉相对开出，从武汉开出的轮船每小时行26千米，从上海开出的轮船每小时行17千米，经过25小时两船相遇．上海到武汉的航道长多少千米？
<gadget id="calculator">26 + 17</gadget>
<output>43</output>

<gadget id="calculator">43 * 25</gadget>
<output>1_075</output>

<result>1_075</result>