$1,811$ $ $812$ $ $514$ $ $309$ $ $121$ $ $99$

Intersegment revenues $1691109016302$

Salary expense $61437940231231762$

Rent expense $13916681924231$

Interest expense $65598249145$

Income tax expense $($savings$)1418761(86)(64)0$

Consider the following questions independently. None of the six segments have a primarily financial nature.

c$.$ What volume of revenues must a single customer generate to necessitate disclosing the existence of a major customer?