We look at the division of 123145 by 51 
Our goal is to divide 123145 by 51.

Step 1:
The number 51 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of 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 / 51

Step 2:
12 divided by 51 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 51

Step 3:
123 divided by 51 is 2 with a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 21 after subtracting 102 from 123.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 51

Advancing to step 4:
The number 51 fits into 211 4 times, leaving a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we subtract 204 from 211, we get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 51

Going ahead to step 5:
74 divided by 51 is 1 with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 241.0
Deduct 51 from 74 and we're left with 23.
Take the next digit (5) from the dividend and append it to 23, then repeat: 235 / 51

Advancing to step 6:
The number 51 fits into 235 4 times, leaving a remainder of 31.
Use 4 as the next digit of our solution. 
Result so far: 2414.0
Deduct 204 from 235 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
The number 51 fits into 310 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 2414.6
Deduct 306 from 310 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.

Moving on to step 8:
51 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 2414.6
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
51 can be fit into 400 7 times, resulting in a remainder of 43.
Use 7 as the next digit of our solution. 
Result so far: 2414.607
If we take 357 away from 400, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 10:
The number 51 fits into 430 8 times, leaving a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 2414.6078
Subtracting 408 from 430 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 11:
The number 51 fits into 220 4 times, leaving a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 2414.60784
The remainder is 16 after subtracting 204 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 12:
160 divided by 51 is 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 2414.607843
If we subtract 153 from 160, we get 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 13:
When dividing 70 by 51, we get 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 2414.6078431
The remainder is 19 after subtracting 51 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 14:
51 goes into 190 3 times with a remainder of 37.
The next digit of our result is 3. 
Result so far: 2414.60784313
If we subtract 153 from 190, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final outcome is 2414.60784313, with a leftover of 3.7e-08.