We look at the division of 122478 by 51 
We're looking to find how many times 51 goes into 122478.

Step 1:
51 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 51

Step 2:
When dividing 12 by 51, we get 0 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.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 51

Moving on to step 3:
122 divided by 51 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 20 after subtracting 102 from 122.
Fetch the next digit (4) from the dividend, attach it to 20 and continue: 204 / 51

Let's proceed to step 4:
The number 51 fits into 204 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 24.0
If we take 204 away from 204, we end up with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 51

Step 5:
51 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 240.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 51

Moving on to step 6:
The number 51 fits into 78 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 2401.0
The remainder is 27 after subtracting 51 from 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 7:
270 divided by 51 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 2401.5
Deduct 255 from 270 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
51 can be fit into 150 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 2401.52
Deduct 102 from 150 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 9:
480 divided by 51 is 9 with a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 2401.529
If we subtract 459 from 480, we 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.

Advancing to step 10:
The number 51 fits into 210 4 times, leaving a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 2401.5294
Subtracting 204 from 210 leaves us 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 11:
60 divided by 51 is 1 with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 2401.52941
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 12:
90 divided by 51 is 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 2401.529411
Subtract 51 from 90 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

In conclusion, the division gives 2401.529411 with a balance of 3.9e-06.