question: Teacher asked me this: Solve 102 + 45 = 21*k for k.
++++++++++
answer: 7

question: Teacher asked me this: Solve 164*i - 896517 = 12791*i for i.
++++++++++
answer: -71

question: Teacher asked me this: Solve 0 = -1572*v - 3271 - 25025 for v.
++++++++++
answer: -18

question: Teacher asked me this: Solve -5*q + 9 = -11 for q.
++++++++++
answer:
4