23.42+46.84×0.5378×

1

4

+0.5378×46.84×0.75-8×46.84×0.125×0.5378，
=0.5378×46.84×（0.25+0.75-0.125×8）+23.42，
=0.5378×46.84×（1-1）+23.42，
=0+23.42，
=23.42；
故答案为：23.42．