Uncle Zhang Ming has to take the bus to and from get off work on Mondays, Wednesdays, and Fridays. On Tuesdays and Thursdays, he takes the bus to work and takes a friend's car to go home. If Uncle Zhang takes a bus, the one-way ticket is 1 yuan, and the weekly ticket (a week-use ticket) is 9 yuan. Do you think it is more economical for Uncle Zhang to buy a weekly ticket? Or is it worth not to buy? Why?
张明叔叔在星期一、三、五要乘公共汽车上下班，星期二、四他乘公共汽车上班，搭朋友的小轿车回家．如果张叔叔乘公共汽车，单程车票是1元，周票(可使用一周的票)是9元，你认为，张叔叔是买一张周票合算？还是不买合算？为什么？
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 + 2</gadget>
<output>8</output>

<gadget id="calculator">1 * 8</gadget>
<output>8</output>

<result>8</result>