Let's divide 236889 by 42
We want to figure out the number of times 236889 can be divided by 42.

Going ahead to step 1:
The number 42 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 42

Going ahead to step 2:
If we divide 23 by 42, we get 0 and a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Fetch the next digit (6) from the dividend, attach it to 23 and continue: 236 / 42

Step 3:
42 can be fit into 236 5 times, resulting in a remainder of 26.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 210 from 236, we get 26.
Fetch the next digit (8) from the dividend, attach it to 26 and continue: 268 / 42

Advancing to step 4:
42 goes into 268 6 times with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
If we take 252 away from 268, we end up with 16.
Bring next digit (8) of the dividend behind the 16 and repeat the process: 168 / 42

On to step 5:
The number 42 fits into 168 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 564.0
Subtract 168 from 168 to get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 42

Moving on to step 6:
42 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 5640.0
The remainder is 9 after subtracting 0 from 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
The number 42 fits into 90 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 5640.2
If we take 84 away from 90, we end up 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 8:
60 divided by 42 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 5640.21
If we subtract 42 from 60, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
42 can be fit into 180 4 times, resulting in a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 5640.214
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 10:
When dividing 120 by 42, we get 2 with a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 5640.2142
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 11:
When dividing 360 by 42, we get 8 with a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 5640.21428
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
If we divide 240 by 42, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 5640.214285
Subtracting 210 from 240 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 13:
If we divide 300 by 42, we get 7 and a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 5640.2142857
If we take 294 away from 300, we end up 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.

Moving on to step 14:
When dividing 60 by 42, we get 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 5640.21428571
Deduct 42 from 60 and we're left 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.

After the division, we end up with 5640.21428571 and a remainder of 1.8e-08.