Answer based on context:

The Broncos' defense, who were the only defensive unit who had not allowed any rushing touchdowns, surrendered three rushing touchdowns, and Eagles' quarterback Carson Wentz threw four touchdown passes, in a 51-23 rout of the Broncos. The defense surrendered 50+ points for the first time since 2010, and backup quarterback Brock Osweiler, starting in place of an ineffective Trevor Siemian, threw two interceptions and nearly threw three more. The Broncos did not reach the end zone until the fourth quarter, when wide receiver Demaryius Thomas scored his first touchdown of the season &#8212; on a 1-yard pass from Osweiler, and linebacker Brandon Marshall returned a fumble 19 yards for a touchdown. Both touchdowns occurred when the game had already been decided in the Eagles' favor.

How many points did the Eagles score rushing?
18