First, the first number on the right is 6, and the second to fifth numbers from left to right are 6 182. The first five digits of the phone number are 66 182.
Then divisible by 2.5.3.4, this 7-digit number is the common multiple of 3, 4 and 5.
That is, the phone number can be divisible by (3*4*5=60)60,
So the number can be divisible by 10, so the phone number ends with 0, leaving only the sixth digit undetermined. ...
6+6+ 1+8+2=23,
So the sixth bit is 1 or 4 or 7,
After experience, only four meet the requirements, that is, the answer is 6 6 1 8 2 4 0.