What is the difference between these two products?

Please calculate the difference between these two numbers.

On days with a large spring range, the coastline changes significantly.

When the tidal range is large, the coastline changes significantly.

Fishing on the coast is difficult today because it's a neap range.

The concept of 'différance' in Derrida's philosophy indicates that the meaning of words is constantly changing.

When wealth inequality widens, the stability of the entire society is shaken.

In math class, the teacher explained the concept of relative complement.

We are in a marriage with an age gap, but our love is deep.

In set theory, the symmetric difference indicates the difference between two sets.