903199 divided by 51 
We want to figure out the number of times 903199 can be divided by 51.

Going ahead to step 1:
51 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 51

Advancing to step 2:
The number 51 fits into 90 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 90, we get 39.
Fetch the next digit (3) from the dividend, attach it to 39 and continue: 393 / 51

Advancing to step 3:
393 divided by 51 is 7 with a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtract 357 from 393 to get 36.
Fetch the next digit (1) from the dividend, attach it to 36 and continue: 361 / 51

Step 4:
If we divide 361 by 51, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 177.0
Subtract 357 from 361 to get 4.
Grab the next digit (9) from the dividend, add it to 4, then carry on: 49 / 51

On to step 5:
49 divided by 51 is 0 with a remainder of 49.
Put 0 as the next digit of the answer. 
Result so far: 1770.0
If we subtract 0 from 49, we get 49.
Grab the next digit (9) from the dividend, add it to 49, then carry on: 499 / 51

Step 6:
51 goes into 499 9 times with a remainder of 40.
Put 9 as the next digit of the answer. 
Result so far: 17709.0
If we take 459 away from 499, we end up 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.

Step 7:
When dividing 400 by 51, we get 7 with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 17709.7
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.

Advancing to step 8:
When dividing 430 by 51, we get 8 with a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 17709.78
Deduct 408 from 430 and we're left 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.

Moving on to step 9:
The number 51 fits into 220 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 17709.784
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 10:
51 goes into 160 3 times with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 17709.7843
If we take 153 away from 160, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 11:
If we divide 70 by 51, we get 1 and a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 17709.78431
Deduct 51 from 70 and we're left 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.

Let's proceed to step 12:
51 can be fit into 190 3 times, resulting in a remainder of 37.
The next digit of our result is 3. 
Result so far: 17709.784313
Deduct 153 from 190 and we're left 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.

Advancing to step 13:
When dividing 370 by 51, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 17709.7843137
Deduct 357 from 370 and we're left 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 14:
130 divided by 51 is 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 17709.78431372
The remainder is 28 after subtracting 102 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 17709.78431372, with a leftover of 2.8e-08.