The number before the "=" must be 2 digits. That means I need to use 2 operators up until then which would need to be:
<single digit>operator<single digit>operator<double digit>
The only operator I can use in slot 2 is division and the only 2 numbers that can use that operator are 9/3 because the 1 can't be repeated ... And it already rejected the 3 in the third slot