First, let's assign variables to these uncomfortably old people:
s = Shaan's age
c = Cristopher's age
The question gives us two equations,
s = 333c
and
s = 141414+c
We can input s = 141414+c into the first equation to replace s.
141414+c = 333c
Subtract both sides by c:
141414 = 332c
Divide:
141414/332 = c
c = 425
c = 425
years old