A plague infects ten people. Every day, each infected person infects six others. How many people are infected after three days?
On the first day, the original ten people infect six people each, so 10 * 6 = <<10*6=60>>60 more people are infected.
There are 10 + 60 = <<10+60=70>>70 infected people after the first day.
On the second day, 70 * 6 = <<70*6=420>>420 more people are infected.
There are 70 + 420 = <<70+420=490>>490 infected people after the second day.
On the third day, 490 * 6 = 2940 more people are infected. Therefore, there are 490 + 2940 = 3430 infected people after three days.
#### 3430