Let's divide 715839 by 51
We want to figure out the number of times 715839 can be divided by 51.

On to step 1:
When dividing 7 by 51, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 51

Advancing to step 2:
The number 51 fits into 71 1 times, leaving a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 51 from 71 and we're left with 20.
Bring next digit (5) of the dividend behind the 20 and repeat the process: 205 / 51

Going ahead to step 3:
The number 51 fits into 205 4 times, leaving a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Subtracting 204 from 205 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 51

Moving on to step 4:
When dividing 18 by 51, we get 0 with a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 140.0
Deduct 0 from 18 and we're left with 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 51

Let's proceed to step 5:
When dividing 183 by 51, we get 3 with a remainder of 30.
The number 3 becomes the next digit in our result. 
Result so far: 1403.0
The remainder is 30 after subtracting 153 from 183.
Fetch the next digit (9) from the dividend, attach it to 30 and continue: 309 / 51

Going ahead to step 6:
If we divide 309 by 51, we get 6 and a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 14036.0
If we take 306 away from 309, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
51 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 14036.0
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
300 divided by 51 is 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 14036.05
Subtract 255 from 300 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 9:
51 can be fit into 450 8 times, resulting in a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 14036.058
If we take 408 away from 450, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
51 goes into 420 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 14036.0588
If we take 408 away from 420, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 14036.0588, with a leftover of 0.00012.