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