Q: Solve:
Solve 19 = 11*u - 25 for u.

A: 4

Q: Solve:
Solve 0 = -16835*f + 16819*f + 528 for f.

A: 33

Q: Solve:
Solve 5208467*l - 20070 = 5208913*l for l.

A:
-45