We're dividing 63808809 by 959 
The aim is to understand the frequency of 959 in 63808809.

Step 1:
When dividing 6 by 959, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 959

On to step 2:
The number 959 fits into 63 0 times, leaving a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Fetch the next digit (8) from the dividend, attach it to 63 and continue: 638 / 959

Step 3:
959 goes into 638 0 times with a remainder of 638.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 638, we get 638.
Grab the next digit (0) from the dividend, add it to 638, then carry on: 6380 / 959

Moving on to step 4:
If we divide 6380 by 959, we get 6 and a remainder of 626.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 5754 from 6380, we get 626.
Fetch the next digit (8) from the dividend, attach it to 626 and continue: 6268 / 959

Moving on to step 5:
959 goes into 6268 6 times with a remainder of 514.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Subtract 5754 from 6268 to get 514.
Fetch the next digit (8) from the dividend, attach it to 514 and continue: 5148 / 959

Step 6:
959 can be fit into 5148 5 times, resulting in a remainder of 353.
The next digit of our result is 5. 
Result so far: 665.0
If we subtract 4795 from 5148, we get 353.
Take the next digit (0) from the dividend and append it to 353, then repeat: 3530 / 959

Moving on to step 7:
3530 divided by 959 is 3 with a remainder of 653.
The number 3 becomes the next digit in our result. 
Result so far: 6653.0
Subtracting 2877 from 3530 leaves us with 653.
Append the next digit (9) from the dividend to 653 and continue with: 6539 / 959

Going ahead to step 8:
If we divide 6539 by 959, we get 6 and a remainder of 785.
Write down 6 as next digit of the result. 
Result so far: 66536.0
Subtracting 5754 from 6539 leaves us with 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Advancing to step 9:
The number 959 fits into 7850 8 times, leaving a remainder of 178.
Write down 8 as next digit of the result. 
Result so far: 66536.8
Subtracting 7672 from 7850 leaves us with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

On to step 10:
When dividing 1780 by 959, we get 1 with a remainder of 821.
Put 1 as the next digit of the answer. 
Result so far: 66536.81
The remainder is 821 after subtracting 959 from 1780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8210, and continue the process.

Let's proceed to step 11:
959 can be fit into 8210 8 times, resulting in a remainder of 538.
Write down 8 as next digit of the result. 
Result so far: 66536.818
Subtracting 7672 from 8210 leaves us with 538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5380, and continue the process.

On to step 12:
The number 959 fits into 5380 5 times, leaving a remainder of 585.
Write down 5 as next digit of the result. 
Result so far: 66536.8185
If we subtract 4795 from 5380, we get 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Going ahead to step 13:
959 goes into 5850 6 times with a remainder of 96.
The next digit of our result is 6. 
Result so far: 66536.81856
If we subtract 5754 from 5850, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 14:
When dividing 960 by 959, we get 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 66536.818561
If we take 959 away from 960, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 15:
The number 959 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 66536.818561
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 16:
100 divided by 959 is 0 with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 66536.818561
If we take 0 away from 100, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 66536.818561 with a remainder of 1e-07.