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).

Input: Consider Input: Two letters picked without replacement from {z: 7, a: 6, r: 1, y: 4, j: 2}. What is prob of sequence az?

Output: 21/190


Input: Consider Input: Let y be -6 + 56 - 1*-2. Let h(k) = k**3 + 6*k**2 - k + 7. Let l be h(-6). What is the greatest common factor of y and l?

Output: 13


Input: Consider Input: Two letters picked without replacement from kkkkkkk. What is prob of picking 2 k?


Output: 1