66208879 divided by 961 
The aim is to understand the frequency of 961 in 66208879.

Step 1:
When dividing 6 by 961, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 961

Let's proceed to step 2:
When dividing 66 by 961, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (2) from the dividend, add it to 66, then carry on: 662 / 961

Let's proceed to step 3:
If we divide 662 by 961, we get 0 and a remainder of 662.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 662 after subtracting 0 from 662.
Include the next digit (0) from the dividend after 662, then repeat: 6620 / 961

Step 4:
If we divide 6620 by 961, we get 6 and a remainder of 854.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 5766 from 6620 and we're left with 854.
Take the next digit (8) from the dividend and append it to 854, then repeat: 8548 / 961

Going ahead to step 5:
The number 961 fits into 8548 8 times, leaving a remainder of 860.
Use 8 as the next digit of our solution. 
Result so far: 68.0
Subtracting 7688 from 8548 leaves us with 860.
Fetch the next digit (8) from the dividend, attach it to 860 and continue: 8608 / 961

Advancing to step 6:
961 goes into 8608 8 times with a remainder of 920.
The number 8 becomes the next digit in our result. 
Result so far: 688.0
If we subtract 7688 from 8608, we get 920.
Fetch the next digit (7) from the dividend, attach it to 920 and continue: 9207 / 961

Moving on to step 7:
9207 divided by 961 is 9 with a remainder of 558.
Record the quotient 9 as the next digit in the result. 
Result so far: 6889.0
If we subtract 8649 from 9207, we get 558.
Take the next digit (9) from the dividend and append it to 558, then repeat: 5589 / 961

Let's proceed to step 8:
When dividing 5589 by 961, we get 5 with a remainder of 784.
Use 5 as the next digit of our solution. 
Result so far: 68895.0
Subtracting 4805 from 5589 leaves us with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

On to step 9:
The number 961 fits into 7840 8 times, leaving a remainder of 152.
The next digit of our result is 8. 
Result so far: 68895.8
Subtract 7688 from 7840 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 10:
961 can be fit into 1520 1 times, resulting in a remainder of 559.
Put 1 as the next digit of the answer. 
Result so far: 68895.81
Subtracting 961 from 1520 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.

On to step 11:
5590 divided by 961 is 5 with a remainder of 785.
The next digit of our result is 5. 
Result so far: 68895.815
Deduct 4805 from 5590 and we're left 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.

Going ahead to step 12:
When dividing 7850 by 961, we get 8 with a remainder of 162.
Use 8 as the next digit of our solution. 
Result so far: 68895.8158
If we take 7688 away from 7850, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 13:
1620 divided by 961 is 1 with a remainder of 659.
The number 1 becomes the next digit in our result. 
Result so far: 68895.81581
Subtracting 961 from 1620 leaves us with 659.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6590, and continue the process.

Going ahead to step 14:
961 can be fit into 6590 6 times, resulting in a remainder of 824.
The next digit of our result is 6. 
Result so far: 68895.815816
If we take 5766 away from 6590, we end up with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Let's proceed to step 15:
961 goes into 8240 8 times with a remainder of 552.
Use 8 as the next digit of our solution. 
Result so far: 68895.8158168
If we take 7688 away from 8240, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 16:
If we divide 5520 by 961, we get 5 and a remainder of 715.
Use 5 as the next digit of our solution. 
Result so far: 68895.81581685
If we subtract 4805 from 5520, we get 715.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7150, and continue the process.

After the division, we end up with 68895.81581685 and a remainder of 7.15e-07.