We look at the division of 121605 by 23 
We want to figure out the number of times 121605 can be divided by 23.

Advancing to step 1:
The number 23 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 23

Going ahead to step 2:
The number 23 fits into 12 0 times, leaving a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 23

On to step 3:
121 divided by 23 is 5 with a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 6 after subtracting 115 from 121.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 23

Moving on to step 4:
When dividing 66 by 23, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 52.0
Deduct 46 from 66 and we're left with 20.
Fetch the next digit (0) from the dividend, attach it to 20 and continue: 200 / 23

Moving on to step 5:
23 can be fit into 200 8 times, resulting in a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 528.0
Subtract 184 from 200 to get 16.
Grab the next digit (5) from the dividend, add it to 16, then carry on: 165 / 23

Advancing to step 6:
165 divided by 23 is 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 5287.0
Deduct 161 from 165 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
23 goes into 40 1 times with a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 5287.1
Subtracting 23 from 40 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 8:
When dividing 170 by 23, we get 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 5287.17
Subtracting 161 from 170 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
23 can be fit into 90 3 times, resulting in a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 5287.173
Subtract 69 from 90 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
23 goes into 210 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 5287.1739
The remainder is 3 after subtracting 207 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
If we divide 30 by 23, we get 1 and a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 5287.17391
Deduct 23 from 30 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 12:
23 can be fit into 70 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 5287.173913
If we take 69 away from 70, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
10 divided by 23 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 5287.173913
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 14:
23 goes into 100 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 5287.17391304
The remainder is 8 after subtracting 92 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 5287.17391304, with a leftover of 8e-09.