96506812 ÷ 639 
The aim is to understand the frequency of 639 in 96506812.

Going ahead to step 1:
639 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 639

Advancing to step 2:
639 goes into 96 0 times with a remainder of 96.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 96, we get 96.
Include the next digit (5) from the dividend after 96, then repeat: 965 / 639

Moving on to step 3:
If we divide 965 by 639, we get 1 and a remainder of 326.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 639 from 965, we get 326.
Fetch the next digit (0) from the dividend, attach it to 326 and continue: 3260 / 639

Moving on to step 4:
When dividing 3260 by 639, we get 5 with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 3195 from 3260 to get 65.
Grab the next digit (6) from the dividend, add it to 65, then carry on: 656 / 639

Moving on to step 5:
639 goes into 656 1 times with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 151.0
If we take 639 away from 656, we end up with 17.
Take the next digit (8) from the dividend and append it to 17, then repeat: 178 / 639

On to step 6:
639 goes into 178 0 times with a remainder of 178.
Put 0 as the next digit of the answer. 
Result so far: 1510.0
Subtracting 0 from 178 leaves us with 178.
Append the next digit (1) from the dividend to 178 and continue with: 1781 / 639

Step 7:
When dividing 1781 by 639, we get 2 with a remainder of 503.
The next digit of our result is 2. 
Result so far: 15102.0
Subtract 1278 from 1781 to get 503.
Grab the next digit (2) from the dividend, add it to 503, then carry on: 5032 / 639

Step 8:
If we divide 5032 by 639, we get 7 and a remainder of 559.
Put 7 as the next digit of the answer. 
Result so far: 151027.0
Subtracting 4473 from 5032 leaves us with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

Step 9:
When dividing 5590 by 639, we get 8 with a remainder of 478.
Use 8 as the next digit of our solution. 
Result so far: 151027.8
Subtracting 5112 from 5590 leaves us with 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

Going ahead to step 10:
If we divide 4780 by 639, we get 7 and a remainder of 307.
The number 7 becomes the next digit in our result. 
Result so far: 151027.87
Subtracting 4473 from 4780 leaves us with 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Let's proceed to step 11:
The number 639 fits into 3070 4 times, leaving a remainder of 514.
Put 4 as the next digit of the answer. 
Result so far: 151027.874
Subtract 2556 from 3070 to get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

On to step 12:
When dividing 5140 by 639, we get 8 with a remainder of 28.
The next digit of our result is 8. 
Result so far: 151027.8748
Deduct 5112 from 5140 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 13:
The number 639 fits into 280 0 times, leaving a remainder of 280.
Use 0 as the next digit of our solution. 
Result so far: 151027.8748
If we subtract 0 from 280, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 14:
639 can be fit into 2800 4 times, resulting in a remainder of 244.
Record the quotient 4 as the next digit in the result. 
Result so far: 151027.874804
If we take 2556 away from 2800, we end up with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Going ahead to step 15:
639 can be fit into 2440 3 times, resulting in a remainder of 523.
Record the quotient 3 as the next digit in the result. 
Result so far: 151027.8748043
Deduct 1917 from 2440 and we're left with 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Moving on to step 16:
When dividing 5230 by 639, we get 8 with a remainder of 118.
Put 8 as the next digit of the answer. 
Result so far: 151027.87480438
If we take 5112 away from 5230, we end up with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

The final outcome is 151027.87480438, with a leftover of 1.18e-07.