We look at the division of 43069316 by 161 
The aim is to understand the frequency of 161 in 43069316.

Let's proceed to step 1:
When dividing 4 by 161, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 161

On to step 2:
161 goes into 43 0 times with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Fetch the next digit (0) from the dividend, attach it to 43 and continue: 430 / 161

Step 3:
If we divide 430 by 161, we get 2 and a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 322 from 430 to get 108.
Bring next digit (6) of the dividend behind the 108 and repeat the process: 1086 / 161

Moving on to step 4:
When dividing 1086 by 161, we get 6 with a remainder of 120.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
The remainder is 120 after subtracting 966 from 1086.
Grab the next digit (9) from the dividend, add it to 120, then carry on: 1209 / 161

Let's proceed to step 5:
If we divide 1209 by 161, we get 7 and a remainder of 82.
The number 7 becomes the next digit in our result. 
Result so far: 267.0
Subtract 1127 from 1209 to get 82.
Fetch the next digit (3) from the dividend, attach it to 82 and continue: 823 / 161

Let's proceed to step 6:
When dividing 823 by 161, we get 5 with a remainder of 18.
The next digit of our result is 5. 
Result so far: 2675.0
The remainder is 18 after subtracting 805 from 823.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 161

On to step 7:
181 divided by 161 is 1 with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 26751.0
If we subtract 161 from 181, we get 20.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 161

Step 8:
The number 161 fits into 206 1 times, leaving a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 267511.0
Subtracting 161 from 206 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 9:
If we divide 450 by 161, we get 2 and a remainder of 128.
The next digit of our result is 2. 
Result so far: 267511.2
Subtract 322 from 450 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 10:
161 goes into 1280 7 times with a remainder of 153.
Record the quotient 7 as the next digit in the result. 
Result so far: 267511.27
Subtract 1127 from 1280 to get 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

On to step 11:
161 can be fit into 1530 9 times, resulting in a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 267511.279
Subtracting 1449 from 1530 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 12:
810 divided by 161 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 267511.2795
If we subtract 805 from 810, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
50 divided by 161 is 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 267511.2795
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 14:
500 divided by 161 is 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 267511.279503
Subtract 483 from 500 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 15:
161 can be fit into 170 1 times, resulting in a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 267511.2795031
The remainder is 9 after subtracting 161 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 16:
The number 161 fits into 90 0 times, leaving a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 267511.2795031
The remainder is 90 after subtracting 0 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

The final outcome is 267511.2795031, with a leftover of 9e-08.