We divide 128485 by 51
We want to figure out the number of times 128485 can be divided by 51.

Going ahead to step 1:
1 divided by 51 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 51

Moving on to step 2:
If we divide 12 by 51, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 51

Let's proceed to step 3:
51 goes into 128 2 times with a remainder of 26.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 102 from 128 and we're left with 26.
Take the next digit (4) from the dividend and append it to 26, then repeat: 264 / 51

Step 4:
264 divided by 51 is 5 with a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Deduct 255 from 264 and we're left with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 51

Moving on to step 5:
98 divided by 51 is 1 with a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 251.0
Subtract 51 from 98 to get 47.
Append the next digit (5) from the dividend to 47 and continue with: 475 / 51

Step 6:
If we divide 475 by 51, we get 9 and a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 2519.0
The remainder is 16 after subtracting 459 from 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
When dividing 160 by 51, we get 3 with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 2519.3
The remainder is 7 after subtracting 153 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 8:
The number 51 fits into 70 1 times, leaving a remainder of 19.
The next digit of our result is 1. 
Result so far: 2519.31
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.

Advancing to step 9:
51 goes into 190 3 times with a remainder of 37.
The next digit of our result is 3. 
Result so far: 2519.313
The remainder is 37 after subtracting 153 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 10:
When dividing 370 by 51, we get 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 2519.3137
If we take 357 away from 370, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 11:
If we divide 130 by 51, we get 2 and a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 2519.31372
Subtract 102 from 130 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
280 divided by 51 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 2519.313725
If we subtract 255 from 280, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
The number 51 fits into 250 4 times, leaving a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 2519.3137254
Deduct 204 from 250 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 14:
The number 51 fits into 460 9 times, leaving a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 2519.31372549
Deduct 459 from 460 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 2519.31372549, with a leftover of 1e-09.