We're dividing 71980091 by 611 
The aim is to understand the frequency of 611 in 71980091.

Advancing to step 1:
When dividing 7 by 611, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 611

Step 2:
611 goes into 71 0 times with a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 71 after subtracting 0 from 71.
Append the next digit (9) from the dividend to 71 and continue with: 719 / 611

On to step 3:
If we divide 719 by 611, we get 1 and a remainder of 108.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 611 from 719 and we're left with 108.
Include the next digit (8) from the dividend after 108, then repeat: 1088 / 611

Step 4:
The number 611 fits into 1088 1 times, leaving a remainder of 477.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 611 from 1088 and we're left with 477.
Include the next digit (0) from the dividend after 477, then repeat: 4770 / 611

Step 5:
4770 divided by 611 is 7 with a remainder of 493.
The next digit of our result is 7. 
Result so far: 117.0
Subtract 4277 from 4770 to get 493.
Append the next digit (0) from the dividend to 493 and continue with: 4930 / 611

Advancing to step 6:
The number 611 fits into 4930 8 times, leaving a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 1178.0
Deduct 4888 from 4930 and we're left with 42.
Grab the next digit (9) from the dividend, add it to 42, then carry on: 429 / 611

Going ahead to step 7:
When dividing 429 by 611, we get 0 with a remainder of 429.
The number 0 becomes the next digit in our result. 
Result so far: 11780.0
Subtracting 0 from 429 leaves us with 429.
Take the next digit (1) from the dividend and append it to 429, then repeat: 4291 / 611

Moving on to step 8:
611 can be fit into 4291 7 times, resulting in a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 117807.0
If we take 4277 away from 4291, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
The number 611 fits into 140 0 times, leaving a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 117807.0
If we subtract 0 from 140, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 10:
611 goes into 1400 2 times with a remainder of 178.
Write down 2 as next digit of the result. 
Result so far: 117807.02
Deduct 1222 from 1400 and we're left 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.

Moving on to step 11:
611 goes into 1780 2 times with a remainder of 558.
The number 2 becomes the next digit in our result. 
Result so far: 117807.022
Subtract 1222 from 1780 to get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

After the division, we end up with 117807.022 and a remainder of 0.0558.