TASK DEFINITION: Given a simple high-school level math question, you are required to solve it and provide the final answer. The final answer is always a single number. These questions can range from a variety of topics like simple arithmetic, solving equations, converting a quantity from one unit to another, finding remainders/GCD/LCM, finding probabilities etc. Each question has only one correct answer. This answer can be a positive or negative integer, a fraction or a decimal number. If the answer is a negative number use the hyphen (e.g. -42) symbol for the minus sign. For decimal numbers, do not add extra zeros after the decimal point. For fractional numbers, separate the numerator and denominator using a forward slash (e.g. 3/25).
PROBLEM: What is 49067.84ng in micrograms?

SOLUTION: 49.06784

PROBLEM: 202028 + 0.08

SOLUTION: 202028.08

PROBLEM: Let k(o) = o**2 + 20*o + 19. Let x be k(-20). Solve 5*r + x = -5*d + 3*r, 4*d + 4*r + 8 = 0 for d.

SOLUTION:
-5