context: ###List of Questions
  (1) Convert 7.3754496 minutes to days.
  (2) Calculate 36/(-675)*5*3/2.
  (3) Calculate prob of sequence ssze when four letters picked without replacement from {h: 2, s: 4, r: 1, e: 1, z: 2}.
  (4) Suppose -4*m - 5*z - 6 = -2*z, -m + z = -2. Suppose -26 = -4*d + 2. Solve 3*p + 2*a = 11, 4*p + m*a = 5*a + d for p.
  (5) Let u(j) = -j**3 + j**2 - 4*j - 6. Calculate the lowest common multiple of 20 and u(-3).
q_1: (1) Convert 7.3754496 minutes to days.
q_2: (2) Calculate 36/(-675)*5*3/2.
q_3: (3) Calculate prob of sequence ssze when four letters picked without replacement from {h: 2, s: 4, r: 1, e: 1, z: 2}.
q_4: (4) Suppose -4*m - 5*z - 6 = -2*z, -m + z = -2. Suppose -26 = -4*d + 2. Solve 3*p + 2*a = 11, 4*p + m*a = 5*a + d for p.
q_5: (5) Let u(j) = -j**3 + j**2 - 4*j - 6. Calculate the lowest common multiple of 20 and u(-3).