context: ###List of Questions
  (1) Let g be (-3)/15 - (-1)/5. Suppose g*c - 10 = -2*c. Suppose 0 = 3*b - 17 + 5. Solve z = c*z, 0 = -b*w - 4*z for w.
  (2) Convert 95.72964cm to kilometers.
  (3) Calculate prob of picking 4 b when four letters picked without replacement from bddbbdbdbddbbbdbbddb.
  (4) Let s = -22 + 57. Let l = s + -22. Calculate the greatest common divisor of l and 65.
  (5) Calculate (((-558)/72)/(-31))/((-2)/(-4)).
q_1: (1) Let g be (-3)/15 - (-1)/5. Suppose g*c - 10 = -2*c. Suppose 0 = 3*b - 17 + 5. Solve z = c*z, 0 = -b*w - 4*z for w.
q_2: (2) Convert 95.72964cm to kilometers.
q_3: (3) Calculate prob of picking 4 b when four letters picked without replacement from bddbbdbdbddbbbdbbddb.
q_4: (4) Let s = -22 + 57. Let l = s + -22. Calculate the greatest common divisor of l and 65.
q_5: (5) Calculate (((-558)/72)/(-31))/((-2)/(-4)).