We're dividing 28905972 by 161 
The aim is to understand the frequency of 161 in 28905972.

Advancing to step 1:
If we divide 2 by 161, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 161

Let's proceed to step 2:
161 can be fit into 28 0 times, resulting in a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Append the next digit (9) from the dividend to 28 and continue with: 289 / 161

Moving on to step 3:
The number 161 fits into 289 1 times, leaving a remainder of 128.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 161 from 289 leaves us with 128.
Take the next digit (0) from the dividend and append it to 128, then repeat: 1280 / 161

On to step 4:
The number 161 fits into 1280 7 times, leaving a remainder of 153.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 1127 from 1280 to get 153.
Include the next digit (5) from the dividend after 153, then repeat: 1535 / 161

Advancing to step 5:
The number 161 fits into 1535 9 times, leaving a remainder of 86.
Write down 9 as next digit of the result. 
Result so far: 179.0
If we take 1449 away from 1535, we end up with 86.
Include the next digit (9) from the dividend after 86, then repeat: 869 / 161

Let's proceed to step 6:
When dividing 869 by 161, we get 5 with a remainder of 64.
Record the quotient 5 as the next digit in the result. 
Result so far: 1795.0
Subtract 805 from 869 to get 64.
Grab the next digit (7) from the dividend, add it to 64, then carry on: 647 / 161

On to step 7:
161 goes into 647 4 times with a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 17954.0
If we subtract 644 from 647, we get 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 161

Moving on to step 8:
The number 161 fits into 32 0 times, leaving a remainder of 32.
The next digit of our result is 0. 
Result so far: 179540.0
If we subtract 0 from 32, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
The number 161 fits into 320 1 times, leaving a remainder of 159.
Record the quotient 1 as the next digit in the result. 
Result so far: 179540.1
Deduct 161 from 320 and we're left with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Advancing to step 10:
161 can be fit into 1590 9 times, resulting in a remainder of 141.
Record the quotient 9 as the next digit in the result. 
Result so far: 179540.19
Subtracting 1449 from 1590 leaves us with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Step 11:
161 can be fit into 1410 8 times, resulting in a remainder of 122.
The number 8 becomes the next digit in our result. 
Result so far: 179540.198
Deduct 1288 from 1410 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Step 12:
The number 161 fits into 1220 7 times, leaving a remainder of 93.
Record the quotient 7 as the next digit in the result. 
Result so far: 179540.1987
The remainder is 93 after subtracting 1127 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Step 13:
161 goes into 930 5 times with a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 179540.19875
Subtracting 805 from 930 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 14:
The number 161 fits into 1250 7 times, leaving a remainder of 123.
Put 7 as the next digit of the answer. 
Result so far: 179540.198757
The remainder is 123 after subtracting 1127 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Moving on to step 15:
161 can be fit into 1230 7 times, resulting in a remainder of 103.
Use 7 as the next digit of our solution. 
Result so far: 179540.1987577
Subtracting 1127 from 1230 leaves us with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Our division results in 179540.1987577 with a remaining 1.03e-06.