The city’s bus system carries 1,200,000 people each day. How many people does the bus system carry for 13 weeks?
13 weeks have 13 * 7 = <<13*7=91>>91 days.
For 91 days the bus system carries 1,200,000 * 91 = <<1200000*91=109200000>>109,200,000 people.
#### 109,200,000