Q: What is the solution?
Solve 1239 = 128*f + 54*f - 217 for f.

A: 8

Q: What is the solution?
Solve -45*l + 17639611 = 17636011 for l.

A: 80

Q: What is the solution?
Solve -3170*s = -285684 + 51104 for s.

A:
74