Task: Question Answering
Input (English): Suppose -5*k + i + 4 - 25 = 0, -16 = 5*k + 4*i. Let r = 14 - k. Suppose 0 = h - 4*j + 4 - r, 0 = 4*h - 2*j - 70. What is the units digit of h?
Output (English): 8