Let's divide 125561 by 42
We want to divide 125561 by 42.

Moving on to step 1:
42 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 42

Advancing to step 2:
42 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 42

Moving on to step 3:
When dividing 125 by 42, we get 2 with a remainder of 41.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 84 from 125 leaves us with 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 42

Going ahead to step 4:
If we divide 415 by 42, we get 9 and a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 29.0
The remainder is 37 after subtracting 378 from 415.
Fetch the next digit (6) from the dividend, attach it to 37 and continue: 376 / 42

Going ahead to step 5:
376 divided by 42 is 8 with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 298.0
Subtracting 336 from 376 leaves us with 40.
Bring next digit (1) of the dividend behind the 40 and repeat the process: 401 / 42

Moving on to step 6:
If we divide 401 by 42, we get 9 and a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 2989.0
Deduct 378 from 401 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
When dividing 230 by 42, we get 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 2989.5
If we take 210 away from 230, we end up 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.

On to step 8:
The number 42 fits into 200 4 times, leaving a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 2989.54
Subtracting 168 from 200 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 9:
The number 42 fits into 320 7 times, leaving a remainder of 26.
The next digit of our result is 7. 
Result so far: 2989.547
If we take 294 away from 320, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 10:
When dividing 260 by 42, we get 6 with a remainder of 8.
The next digit of our result is 6. 
Result so far: 2989.5476
Deduct 252 from 260 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
If we divide 80 by 42, we get 1 and a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 2989.54761
Subtracting 42 from 80 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 12:
380 divided by 42 is 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 2989.547619
Deduct 378 from 380 and we're left 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.

Going ahead to step 13:
If we divide 20 by 42, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 2989.547619
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.

Step 14:
42 goes into 200 4 times with a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 2989.54761904
If we take 168 away from 200, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 2989.54761904 and a remainder of 3.2e-08.