We look at the division of 83892721 by 161 
The aim is to understand the frequency of 161 in 83892721.

Moving on to step 1:
The number 161 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 161

Step 2:
The number 161 fits into 83 0 times, leaving a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Fetch the next digit (8) from the dividend, attach it to 83 and continue: 838 / 161

Moving on to step 3:
When dividing 838 by 161, we get 5 with a remainder of 33.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 805 from 838 leaves us with 33.
Grab the next digit (9) from the dividend, add it to 33, then carry on: 339 / 161

Step 4:
339 divided by 161 is 2 with a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 52.0
Subtracting 322 from 339 leaves us with 17.
Grab the next digit (2) from the dividend, add it to 17, then carry on: 172 / 161

Going ahead to step 5:
When dividing 172 by 161, we get 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 521.0
Deduct 161 from 172 and we're left with 11.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 161

On to step 6:
When dividing 117 by 161, we get 0 with a remainder of 117.
The next digit of our result is 0. 
Result so far: 5210.0
If we take 0 away from 117, we end up with 117.
Grab the next digit (2) from the dividend, add it to 117, then carry on: 1172 / 161

Moving on to step 7:
161 goes into 1172 7 times with a remainder of 45.
The next digit of our result is 7. 
Result so far: 52107.0
Subtract 1127 from 1172 to get 45.
Fetch the next digit (1) from the dividend, attach it to 45 and continue: 451 / 161

Let's proceed to step 8:
The number 161 fits into 451 2 times, leaving a remainder of 129.
Put 2 as the next digit of the answer. 
Result so far: 521072.0
The remainder is 129 after subtracting 322 from 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Step 9:
The number 161 fits into 1290 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 521072.8
If we take 1288 away from 1290, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
20 divided by 161 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 521072.8
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
The number 161 fits into 200 1 times, leaving a remainder of 39.
The next digit of our result is 1. 
Result so far: 521072.801
Subtract 161 from 200 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 12:
161 can be fit into 390 2 times, resulting in a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 521072.8012
Subtract 322 from 390 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 13:
161 goes into 680 4 times with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 521072.80124
Subtract 644 from 680 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 14:
161 goes into 360 2 times with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 521072.801242
Subtract 322 from 360 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 15:
161 can be fit into 380 2 times, resulting in a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 521072.8012422
The remainder is 58 after subtracting 322 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

In conclusion, the division gives 521072.8012422 with a balance of 5.8e-07.