question: Teacher asked me this: Solve -5*l - 13 - 14 + 92 = 0 for l.
++++++++++
answer: 13

question: Teacher asked me this: Solve 427716 + 330847 = 12857*f for f.
++++++++++
answer: 59

question: Teacher asked me this: Solve 37 + 0 = -19*i - 20 for i.
++++++++++
answer: -3

question: Teacher asked me this: Solve 10*l = 453 - 423 for l.
++++++++++
answer:
3