We look at the division of 39767740 by 221 
The aim is to understand the frequency of 221 in 39767740.

Advancing to step 1:
If we divide 3 by 221, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 221

Step 2:
221 can be fit into 39 0 times, resulting in a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Include the next digit (7) from the dividend after 39, then repeat: 397 / 221

Going ahead to step 3:
397 divided by 221 is 1 with a remainder of 176.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 221 from 397, we get 176.
Grab the next digit (6) from the dividend, add it to 176, then carry on: 1766 / 221

Step 4:
1766 divided by 221 is 7 with a remainder of 219.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 1547 from 1766 and we're left with 219.
Include the next digit (7) from the dividend after 219, then repeat: 2197 / 221

Let's proceed to step 5:
2197 divided by 221 is 9 with a remainder of 208.
Put 9 as the next digit of the answer. 
Result so far: 179.0
If we take 1989 away from 2197, we end up with 208.
Include the next digit (7) from the dividend after 208, then repeat: 2087 / 221

Going ahead to step 6:
221 can be fit into 2087 9 times, resulting in a remainder of 98.
Put 9 as the next digit of the answer. 
Result so far: 1799.0
If we take 1989 away from 2087, we end up with 98.
Append the next digit (4) from the dividend to 98 and continue with: 984 / 221

Step 7:
If we divide 984 by 221, we get 4 and a remainder of 100.
The number 4 becomes the next digit in our result. 
Result so far: 17994.0
If we subtract 884 from 984, we get 100.
Grab the next digit (0) from the dividend, add it to 100, then carry on: 1000 / 221

Step 8:
1000 divided by 221 is 4 with a remainder of 116.
The next digit of our result is 4. 
Result so far: 179944.0
Subtracting 884 from 1000 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 9:
1160 divided by 221 is 5 with a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 179944.5
Deduct 1105 from 1160 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 10:
221 can be fit into 550 2 times, resulting in a remainder of 108.
The number 2 becomes the next digit in our result. 
Result so far: 179944.52
The remainder is 108 after subtracting 442 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Moving on to step 11:
221 can be fit into 1080 4 times, resulting in a remainder of 196.
The number 4 becomes the next digit in our result. 
Result so far: 179944.524
Subtract 884 from 1080 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 12:
The number 221 fits into 1960 8 times, leaving a remainder of 192.
Write down 8 as next digit of the result. 
Result so far: 179944.5248
Subtract 1768 from 1960 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 13:
When dividing 1920 by 221, we get 8 with a remainder of 152.
Use 8 as the next digit of our solution. 
Result so far: 179944.52488
If we take 1768 away from 1920, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

In conclusion, the division gives 179944.52488 with a balance of 0.000152.