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).

[Q]: Suppose 0*m - m - 3 = 0. Let i = m - -7. Solve -v = -0*v + i for v.
[A]: -4


[Q]: Convert 994.8408l to millilitres.
[A]: 994840.8


[Q]: Let j(k) = k + 12. Let r be j(-7). Suppose -3 = a, -w + 3 = 2*a + r. Solve m + 5*y - 20 = -w*m, -4*m + 3*y - 19 = 0 for m.
[A]:
-1