Q: What is the solution?
Solve 1638 = 20*s + 1638 for s.

A: 0

Q: What is the solution?
Solve 102*k - 405 - 85 + 82 = 0 for k.

A: 4

Q: What is the solution?
Solve 167410*o = 167387*o + 602 + 295 for o.

A:
39