We divide 81977467 by 221
The aim is to understand the frequency of 221 in 81977467.

Moving on to step 1:
221 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 221

Advancing to step 2:
81 divided by 221 is 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Include the next digit (9) from the dividend after 81, then repeat: 819 / 221

Moving on to step 3:
If we divide 819 by 221, we get 3 and a remainder of 156.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 663 from 819 and we're left with 156.
Bring next digit (7) of the dividend behind the 156 and repeat the process: 1567 / 221

Going ahead to step 4:
If we divide 1567 by 221, we get 7 and a remainder of 20.
Use 7 as the next digit of our solution. 
Result so far: 37.0
If we subtract 1547 from 1567, we get 20.
Take the next digit (7) from the dividend and append it to 20, then repeat: 207 / 221

Going ahead to step 5:
When dividing 207 by 221, we get 0 with a remainder of 207.
The number 0 becomes the next digit in our result. 
Result so far: 370.0
Subtracting 0 from 207 leaves us with 207.
Grab the next digit (4) from the dividend, add it to 207, then carry on: 2074 / 221

Moving on to step 6:
If we divide 2074 by 221, we get 9 and a remainder of 85.
Write down 9 as next digit of the result. 
Result so far: 3709.0
The remainder is 85 after subtracting 1989 from 2074.
Include the next digit (6) from the dividend after 85, then repeat: 856 / 221

Advancing to step 7:
856 divided by 221 is 3 with a remainder of 193.
Use 3 as the next digit of our solution. 
Result so far: 37093.0
The remainder is 193 after subtracting 663 from 856.
Grab the next digit (7) from the dividend, add it to 193, then carry on: 1937 / 221

On to step 8:
If we divide 1937 by 221, we get 8 and a remainder of 169.
Put 8 as the next digit of the answer. 
Result so far: 370938.0
Deduct 1768 from 1937 and we're left with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

On to step 9:
The number 221 fits into 1690 7 times, leaving a remainder of 143.
Record the quotient 7 as the next digit in the result. 
Result so far: 370938.7
Deduct 1547 from 1690 and we're left with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Advancing to step 10:
The number 221 fits into 1430 6 times, leaving a remainder of 104.
The next digit of our result is 6. 
Result so far: 370938.76
Subtracting 1326 from 1430 leaves us with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 11:
If we divide 1040 by 221, we get 4 and a remainder of 156.
Put 4 as the next digit of the answer. 
Result so far: 370938.764
If we take 884 away from 1040, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 12:
When dividing 1560 by 221, we get 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 370938.7647
If we subtract 1547 from 1560, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 13:
221 goes into 130 0 times with a remainder of 130.
Record the quotient 0 as the next digit in the result. 
Result so far: 370938.7647
Deduct 0 from 130 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Moving on to step 14:
When dividing 1300 by 221, we get 5 with a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 370938.764705
If we subtract 1105 from 1300, we get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 15:
If we divide 1950 by 221, we get 8 and a remainder of 182.
The number 8 becomes the next digit in our result. 
Result so far: 370938.7647058
If we subtract 1768 from 1950, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

On to step 16:
1820 divided by 221 is 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 370938.76470588
Subtract 1768 from 1820 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final result is 370938.76470588 with a remainder of 5.2e-08.