Question:
Solve 409518*u - 409400*u - 236 = 0 for u..

Answer:
2

Question:
Solve 1175*b = 1169*b + 60 for b..

Answer:
10

Question:
Solve -9403*y = -9395*y - 136 for y..

Answer:
17

Question:
Solve -523*c + 6081 = 2420 for c..

Answer:
7