A person travels to a certain place by bicycle, plans to travel 36 kilometers every day, travels for 3 days and rests for 1 day, and can reach the destination in 13 days. In fact, he only walks 30 kilometers a day, and only rests for one day in the middle. How many days can he reach his destination?
某人骑自行车到某地旅行，计划每天行36千米，行3天休息1天，13天可以到达目的地．实际上他每天只行30千米，中途只休息了1天，多少天可以到达目的地？
<gadget id="calculator">13 - 3</gadget>
<output>10</output>

<gadget id="calculator">36 * 10</gadget>
<output>360</output>

<gadget id="calculator">360 / 30</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>