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 {i: 3, v: 2}. Give prob of sequence iv.

Output: 3/10


Input: Consider Input: Calculate prob of sequence dqd when three letters picked without replacement from fqfuurdttdft.

Output: 1/660


Input: Consider Input: Four letters picked without replacement from mcmmmuummmucumummim. Give prob of sequence ccum.


Output: 55/46512