We look at the division of 390538 by 51 
Let's see how many times 51 fits into 390538.

Advancing to step 1:
3 divided by 51 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 51

Step 2:
51 goes into 39 0 times with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Take the next digit (0) from the dividend and append it to 39, then repeat: 390 / 51

Advancing to step 3:
51 can be fit into 390 7 times, resulting in a remainder of 33.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 357 from 390 leaves us with 33.
Take the next digit (5) from the dividend and append it to 33, then repeat: 335 / 51

Let's proceed to step 4:
335 divided by 51 is 6 with a remainder of 29.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
If we subtract 306 from 335, we get 29.
Include the next digit (3) from the dividend after 29, then repeat: 293 / 51

Advancing to step 5:
If we divide 293 by 51, we get 5 and a remainder of 38.
Record the quotient 5 as the next digit in the result. 
Result so far: 765.0
If we subtract 255 from 293, we get 38.
Bring next digit (8) of the dividend behind the 38 and repeat the process: 388 / 51

Advancing to step 6:
If we divide 388 by 51, we get 7 and a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 7657.0
Subtracting 357 from 388 leaves us 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.

Let's proceed to step 7:
310 divided by 51 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 7657.6
If we take 306 away from 310, we end up 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.

Let's proceed to step 8:
40 divided by 51 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 7657.6
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed 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: 7657.607
Deduct 357 from 400 and we're left 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.

Going ahead to step 10:
51 can be fit into 430 8 times, resulting in a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 7657.6078
Subtract 408 from 430 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 11:
51 goes into 220 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 7657.60784
Deduct 204 from 220 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
51 can be fit into 160 3 times, resulting in a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 7657.607843
Subtract 153 from 160 to 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.

Going ahead to step 13:
The number 51 fits into 70 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 7657.6078431
If we take 51 away from 70, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 14:
51 goes into 190 3 times with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 7657.60784313
Subtracting 153 from 190 leaves us with 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 result is 7657.60784313 with a remainder of 3.7e-08.