123089 divided by 42 
Let's see how many times 42 fits into 123089.

Going ahead to step 1:
42 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 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.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 42

Moving on to step 3:
If we divide 123 by 42, we get 2 and a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 84 from 123, we get 39.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 42

Going ahead to step 4:
The number 42 fits into 390 9 times, leaving a remainder of 12.
The next digit of our result is 9. 
Result so far: 29.0
If we take 378 away from 390, we end up with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 42

Let's proceed to step 5:
The number 42 fits into 128 3 times, leaving a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 293.0
Subtracting 126 from 128 leaves us with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 42

On to step 6:
When dividing 29 by 42, we get 0 with a remainder of 29.
Put 0 as the next digit of the answer. 
Result so far: 2930.0
Subtract 0 from 29 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
The number 42 fits into 290 6 times, leaving a remainder of 38.
Put 6 as the next digit of the answer. 
Result so far: 2930.6
If we take 252 away from 290, we end up 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.

On to step 8:
When dividing 380 by 42, we get 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 2930.69
If we subtract 378 from 380, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
42 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 2930.69
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.

Let's proceed to step 10:
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: 2930.6904
Subtract 168 from 200 to 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.

Let's proceed to step 11:
42 can be fit into 320 7 times, resulting in a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 2930.69047
Subtracting 294 from 320 leaves us 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.

Going ahead to step 12:
260 divided by 42 is 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 2930.690476
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.

Moving on to step 13:
The number 42 fits into 80 1 times, leaving a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 2930.6904761
If we take 42 away from 80, we end up 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 14:
When dividing 380 by 42, we get 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 2930.69047619
If we take 378 away from 380, we end up 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.

Our division results in 2930.69047619 with a remaining 2e-09.