transitive verb, godan verb
散る is "to be scattered." This is when you're doing the scattering. You know that because you're causing a ruckus (らかす) from all the scattering of money you're doing, down on the people below.
The reading of the 散 comes from 散る. So, go ahead and scatter more memories around your brain, you got this already.
There are dirty clothes scattered all over the floor in my room. Even if I cleaned them up, it would just get messy again the next day.