context: ###List of Questions
  (1) Evaluate -8 + (-5 - (-10 - (0 + -4))).
  (2) Solve -4*z + 4*f - 8 = f, 0 = z - 4*f + 2 for z.
  (3) Calculate prob of picking 1 p and 1 a when two letters picked without replacement from {j: 7, d: 4, p: 3, l: 4, a: 1}.
  (4) What is 9227.699 litres in millilitres?
  (5) Let z be -3 + 6 + 4/2. Suppose -28 = -4*g - 0*u - z*u, 5*u - 24 = -2*g. Suppose -4*i = -3*o + o + g, o = 3*i. What is the highest common factor of o and 3?
q_1: (1) Evaluate -8 + (-5 - (-10 - (0 + -4))).
q_2: (2) Solve -4*z + 4*f - 8 = f, 0 = z - 4*f + 2 for z.
q_3: (3) Calculate prob of picking 1 p and 1 a when two letters picked without replacement from {j: 7, d: 4, p: 3, l: 4, a: 1}.
q_4: (4) What is 9227.699 litres in millilitres?
q_5: (5) Let z be -3 + 6 + 4/2. Suppose -28 = -4*g - 0*u - z*u, 5*u - 24 = -2*g. Suppose -4*i = -3*o + o + g, o = 3*i. What is the highest common factor of o and 3?