900161 divided by 23 
The aim is to understand the frequency of 23 in 900161.

On to step 1:
When dividing 9 by 23, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 23

Moving on to step 2:
23 goes into 90 3 times with a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 69 from 90 leaves us with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 23

Let's proceed to step 3:
23 goes into 210 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtracting 207 from 210 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 23

Moving on to step 4:
If we divide 31 by 23, we get 1 and a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 391.0
Subtracting 23 from 31 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 23

Step 5:
23 goes into 86 3 times with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 3913.0
Subtracting 69 from 86 leaves us with 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 23

Moving on to step 6:
When dividing 171 by 23, we get 7 with a remainder of 10.
The number 7 becomes the next digit in our result. 
Result so far: 39137.0
If we subtract 161 from 171, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
If we divide 100 by 23, we get 4 and a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 39137.4
Subtract 92 from 100 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 23 is 3 with a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 39137.43
If we take 69 away from 80, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 9:
The number 23 fits into 110 4 times, leaving a remainder of 18.
The next digit of our result is 4. 
Result so far: 39137.434
Subtracting 92 from 110 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 10:
When dividing 180 by 23, we get 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 39137.4347
The remainder is 19 after subtracting 161 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 11:
190 divided by 23 is 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 39137.43478
Deduct 184 from 190 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
If we divide 60 by 23, we get 2 and a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 39137.434782
If we subtract 46 from 60, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 13:
The number 23 fits into 140 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 39137.4347826
Subtracting 138 from 140 leaves us 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 14:
23 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 39137.4347826
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 39137.4347826, and the remainder is 2e-08.