<human>:  In a town, there are four primary schools. Two of them can teach 400 students at a time, and the other two 340 students at a time. How many students at a time in total, can these four primary schools teach?
<bot>: How many students can the two schools teach? ** Two schools can teach 400 students, so in total, they can teach 2 * 400 = <<2*400=800>>800 students.
How many students can the other two schools teach? ** The other two schools can teach 340 students, which gives 2 * 340 = <<2*340=680>>680 students in total.
How many students at a time in total, can these four primary schools teach? ** So all four schools can teach 800 + 680 = <<800+680=1480>>1480 students at a time.
#### 1480