You can model that you expect a 1.25% raise each year that you work for a certain company. If you currently make $40,000, how many years should go by until you are making $120,000? (Round to the closest year.)

I have this worked all the way down to this and not I am stuck

A=P(1+r)n

120,000=40,000(1+0.0125)^N

(1.0125^N) 120,000/40,000

n=log 1.0125^3

n=log^3/ log 1.0125