16719541 divided by 261 
The aim is to understand the frequency of 261 in 16719541.

Step 1:
1 divided by 261 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 261

Going ahead to step 2:
261 can be fit into 16 0 times, resulting in a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 261

Going ahead to step 3:
If we divide 167 by 261, we get 0 and a remainder of 167.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 167 and we're left with 167.
Bring next digit (1) of the dividend behind the 167 and repeat the process: 1671 / 261

On to step 4:
1671 divided by 261 is 6 with a remainder of 105.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 1566 from 1671 to get 105.
Fetch the next digit (9) from the dividend, attach it to 105 and continue: 1059 / 261

On to step 5:
261 can be fit into 1059 4 times, resulting in a remainder of 15.
Use 4 as the next digit of our solution. 
Result so far: 64.0
Subtract 1044 from 1059 to get 15.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 261

Advancing to step 6:
261 can be fit into 155 0 times, resulting in a remainder of 155.
Use 0 as the next digit of our solution. 
Result so far: 640.0
Deduct 0 from 155 and we're left with 155.
Include the next digit (4) from the dividend after 155, then repeat: 1554 / 261

Advancing to step 7:
1554 divided by 261 is 5 with a remainder of 249.
Put 5 as the next digit of the answer. 
Result so far: 6405.0
Deduct 1305 from 1554 and we're left with 249.
Grab the next digit (1) from the dividend, add it to 249, then carry on: 2491 / 261

On to step 8:
261 can be fit into 2491 9 times, resulting in a remainder of 142.
The next digit of our result is 9. 
Result so far: 64059.0
If we take 2349 away from 2491, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 9:
The number 261 fits into 1420 5 times, leaving a remainder of 115.
Put 5 as the next digit of the answer. 
Result so far: 64059.5
If we subtract 1305 from 1420, we get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 10:
1150 divided by 261 is 4 with a remainder of 106.
The number 4 becomes the next digit in our result. 
Result so far: 64059.54
If we subtract 1044 from 1150, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 11:
When dividing 1060 by 261, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 64059.544
If we take 1044 away from 1060, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 64059.544, and the remainder is 0.0016.