I am trying to find a logic which can give me one digit (first digit on the left of decimal dot) after division.

The ultimate goal is given below,

number A / number B mod 2 =?

The concern is the two numbers (A & B) are two large. Any trick can help.

Example: 913695089923267549815145223638290430 / 70369745177664

I am a database developer (IT Professional) and finding it difficult to do. I am not sure I chose correct forum (type) or not?