We look at the division of 51719078 by 839 
We want to figure out the number of times 51719078 can be divided by 839.

Step 1:
If we divide 5 by 839, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 839

Moving on to step 2:
839 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 839

Step 3:
When dividing 517 by 839, we get 0 with a remainder of 517.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 517, we end up with 517.
Take the next digit (1) from the dividend and append it to 517, then repeat: 5171 / 839

Let's proceed to step 4:
839 can be fit into 5171 6 times, resulting in a remainder of 137.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we subtract 5034 from 5171, we get 137.
Take the next digit (9) from the dividend and append it to 137, then repeat: 1379 / 839

Step 5:
When dividing 1379 by 839, we get 1 with a remainder of 540.
Put 1 as the next digit of the answer. 
Result so far: 61.0
Subtracting 839 from 1379 leaves us with 540.
Grab the next digit (0) from the dividend, add it to 540, then carry on: 5400 / 839

Moving on to step 6:
5400 divided by 839 is 6 with a remainder of 366.
The next digit of our result is 6. 
Result so far: 616.0
Subtract 5034 from 5400 to get 366.
Append the next digit (7) from the dividend to 366 and continue with: 3667 / 839

Let's proceed to step 7:
839 can be fit into 3667 4 times, resulting in a remainder of 311.
Put 4 as the next digit of the answer. 
Result so far: 6164.0
The remainder is 311 after subtracting 3356 from 3667.
Take the next digit (8) from the dividend and append it to 311, then repeat: 3118 / 839

On to step 8:
The number 839 fits into 3118 3 times, leaving a remainder of 601.
Record the quotient 3 as the next digit in the result. 
Result so far: 61643.0
Subtracting 2517 from 3118 leaves us with 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

Moving on to step 9:
839 can be fit into 6010 7 times, resulting in a remainder of 137.
Use 7 as the next digit of our solution. 
Result so far: 61643.7
Deduct 5873 from 6010 and we're left with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Let's proceed to step 10:
If we divide 1370 by 839, we get 1 and a remainder of 531.
Write down 1 as next digit of the result. 
Result so far: 61643.71
If we take 839 away from 1370, we end up with 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

Going ahead to step 11:
If we divide 5310 by 839, we get 6 and a remainder of 276.
The next digit of our result is 6. 
Result so far: 61643.716
If we take 5034 away from 5310, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

On to step 12:
The number 839 fits into 2760 3 times, leaving a remainder of 243.
Record the quotient 3 as the next digit in the result. 
Result so far: 61643.7163
If we subtract 2517 from 2760, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Step 13:
When dividing 2430 by 839, we get 2 with a remainder of 752.
Record the quotient 2 as the next digit in the result. 
Result so far: 61643.71632
If we take 1678 away from 2430, we end up with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Let's proceed to step 14:
When dividing 7520 by 839, we get 8 with a remainder of 808.
The number 8 becomes the next digit in our result. 
Result so far: 61643.716328
The remainder is 808 after subtracting 6712 from 7520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8080, and continue the process.

Going ahead to step 15:
The number 839 fits into 8080 9 times, leaving a remainder of 529.
Record the quotient 9 as the next digit in the result. 
Result so far: 61643.7163289
Subtracting 7551 from 8080 leaves us with 529.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5290, and continue the process.

Going ahead to step 16:
If we divide 5290 by 839, we get 6 and a remainder of 256.
Use 6 as the next digit of our solution. 
Result so far: 61643.71632896
If we subtract 5034 from 5290, we get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

After the division, we end up with 61643.71632896 and a remainder of 2.56e-07.