After preparing 140 kg of fish for the eight-character tsunami managed by ahava Aquarium, these eight walruses * * * ate 80 kg of fish two days ago.

80÷2÷8

=40÷8

=5 kg

( 170-80)÷(8-2)÷5

=90÷6÷5

= 15÷5

=3 days

A: The remaining fish and walrus can be eaten for three days.