We look at the division of 78719431 by 651 
Let's see how many times 651 fits into 78719431.

Step 1:
If we divide 7 by 651, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 651

Let's proceed to step 2:
When dividing 78 by 651, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Fetch the next digit (7) from the dividend, attach it to 78 and continue: 787 / 651

Going ahead to step 3:
If we divide 787 by 651, we get 1 and a remainder of 136.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 651 from 787 and we're left with 136.
Take the next digit (1) from the dividend and append it to 136, then repeat: 1361 / 651

Step 4:
651 can be fit into 1361 2 times, resulting in a remainder of 59.
Put 2 as the next digit of the answer. 
Result so far: 12.0
The remainder is 59 after subtracting 1302 from 1361.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 651

Moving on to step 5:
The number 651 fits into 599 0 times, leaving a remainder of 599.
Write down 0 as next digit of the result. 
Result so far: 120.0
Subtracting 0 from 599 leaves us with 599.
Bring next digit (4) of the dividend behind the 599 and repeat the process: 5994 / 651

Advancing to step 6:
If we divide 5994 by 651, we get 9 and a remainder of 135.
Record the quotient 9 as the next digit in the result. 
Result so far: 1209.0
If we subtract 5859 from 5994, we get 135.
Bring next digit (3) of the dividend behind the 135 and repeat the process: 1353 / 651

Advancing to step 7:
651 can be fit into 1353 2 times, resulting in a remainder of 51.
Use 2 as the next digit of our solution. 
Result so far: 12092.0
The remainder is 51 after subtracting 1302 from 1353.
Take the next digit (1) from the dividend and append it to 51, then repeat: 511 / 651

Step 8:
651 goes into 511 0 times with a remainder of 511.
Write down 0 as next digit of the result. 
Result so far: 120920.0
If we subtract 0 from 511, we get 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 9:
651 can be fit into 5110 7 times, resulting in a remainder of 553.
Write down 7 as next digit of the result. 
Result so far: 120920.7
If we take 4557 away from 5110, we end up with 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

Going ahead to step 10:
When dividing 5530 by 651, we get 8 with a remainder of 322.
The next digit of our result is 8. 
Result so far: 120920.78
Deduct 5208 from 5530 and we're left with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

On to step 11:
When dividing 3220 by 651, we get 4 with a remainder of 616.
Record the quotient 4 as the next digit in the result. 
Result so far: 120920.784
Subtracting 2604 from 3220 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 12:
651 goes into 6160 9 times with a remainder of 301.
The number 9 becomes the next digit in our result. 
Result so far: 120920.7849
Subtracting 5859 from 6160 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 13:
651 can be fit into 3010 4 times, resulting in a remainder of 406.
Write down 4 as next digit of the result. 
Result so far: 120920.78494
Subtracting 2604 from 3010 leaves us with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Going ahead to step 14:
The number 651 fits into 4060 6 times, leaving a remainder of 154.
The number 6 becomes the next digit in our result. 
Result so far: 120920.784946
The remainder is 154 after subtracting 3906 from 4060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Going ahead to step 15:
651 can be fit into 1540 2 times, resulting in a remainder of 238.
Put 2 as the next digit of the answer. 
Result so far: 120920.7849462
Subtracting 1302 from 1540 leaves us with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Moving on to step 16:
When dividing 2380 by 651, we get 3 with a remainder of 427.
Write down 3 as next digit of the result. 
Result so far: 120920.78494623
If we subtract 1953 from 2380, we get 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Our division results in 120920.78494623 with a remaining 4.27e-07.