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.

# Answer

109,200,000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The city’s bus system carries 1,200,000 people each day. How many people does the bus system carry for 13 weeks?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
109,200,000
The city’s bus system carries 1,200,000 people each day. How many people does the bus system carry for 13 weeks?
train