to create the equation you would need to come up with the variables first. first start off by saying her birth month will represent m and d will represent her birth day. the equation will then become 36m(d) now for some possibilities. to find a possibility you would need to do 36 * a month then you would multiply that by a day in that month. so let's start with 36 times 8 x 2 that will give you the answer of 576. if you keep plugging in numbers that will give you some possibilities.