How does "somewhere" work here?
Native speaker’s answer
Rebecca
The word "somewhere" in this context is used to indicate an approximate amount of something. So "somewhere between four and five thousand times" means that the amount of times he's flown in a plane could be any amount between four and five thousand. In this case, "somewhere" is often paired with "between". Ex: She has somewhere between ten and twenty cats. Ex: He has ran somewhere between four and eight hours today.