Xiaotao went to the bookstore to buy books. He started from home at 8:55 in the morning and walked towards the bookstore. He passed 3 intersections in total, and at two intersections, he encountered red lights and waited for 3 minutes each. He arrived at the bookstore at 9:26 am. How long did it take him to walk?
小涛去书店买书，他上午8：55从家里出发，向书店走去，他一共经过了3个十字路口，在其中两个路口遇到的都是红灯，各等了3分钟．他在上午9：26到达书店．他走路一共花了多长时间？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">31 - 6</gadget>
<output>25</output>

<result>25</result>