There are infinitely many possible answers.
Start with integer sums of two numbers:
33+33, 32+34, ... , 1+65, 0+66, -1+67, -2+68 ... all the way to infinity!
Then two number to 1 decimal place (dp):
32.9+33.1, 32.8+33.2, 32.7+33.3 and again, all the way to infinity.
Next, pairs of numbers to 3 dp, 4 dp, 5 dp, ... to infinitely many dp.
Back again, and consider sums of 3 numbers, 4 numbers, 5 numbers, ... , infinitely many numbers.
That takes care of additions. You can next move to multiplication, and then other mathematical operations.
66 plus 66 equals 132
66 times 6 equals 396.
I believe it equals -66.
66 squared equals 4,356.
66
6
5 times what equals 330 can be solved by dividing 330 by 5. The answer is 66. So, 5 times 66 equals 330.
132 divided by 2 = 66
0.0303
6 x 11 = 66
100-34 equals = 66
If 66 = PP, then 66 = P2. After simplifying 66 = P2, the solution is: 8.124038404635960360459883568266 = P