We look at the division of 7958250 by 647 
Let's see how many times 647 fits into 7958250.

Step 1:
When dividing 7 by 647, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 647

Going ahead to step 2:
When dividing 79 by 647, we get 0 with a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Append the next digit (5) from the dividend to 79 and continue with: 795 / 647

On to step 3:
647 can be fit into 795 1 times, resulting in a remainder of 148.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 647 from 795 leaves us with 148.
Grab the next digit (8) from the dividend, add it to 148, then carry on: 1488 / 647

On to step 4:
647 can be fit into 1488 2 times, resulting in a remainder of 194.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 1294 from 1488 and we're left with 194.
Grab the next digit (2) from the dividend, add it to 194, then carry on: 1942 / 647

Step 5:
The number 647 fits into 1942 3 times, leaving a remainder of 1.
The next digit of our result is 3. 
Result so far: 123.0
The remainder is 1 after subtracting 1941 from 1942.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 647

On to step 6:
15 divided by 647 is 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 1230.0
Subtracting 0 from 15 leaves us with 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 647

Moving on to step 7:
The number 647 fits into 150 0 times, leaving a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 12300.0
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 8:
The number 647 fits into 1500 2 times, leaving a remainder of 206.
Write down 2 as next digit of the result. 
Result so far: 12300.2
If we subtract 1294 from 1500, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Step 9:
647 goes into 2060 3 times with a remainder of 119.
Put 3 as the next digit of the answer. 
Result so far: 12300.23
Subtract 1941 from 2060 to get 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Advancing to step 10:
If we divide 1190 by 647, we get 1 and a remainder of 543.
The number 1 becomes the next digit in our result. 
Result so far: 12300.231
Subtract 647 from 1190 to get 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

Moving on to step 11:
If we divide 5430 by 647, we get 8 and a remainder of 254.
The number 8 becomes the next digit in our result. 
Result so far: 12300.2318
Deduct 5176 from 5430 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 12:
647 can be fit into 2540 3 times, resulting in a remainder of 599.
The number 3 becomes the next digit in our result. 
Result so far: 12300.23183
Subtract 1941 from 2540 to get 599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5990, and continue the process.

Moving on to step 13:
5990 divided by 647 is 9 with a remainder of 167.
The next digit of our result is 9. 
Result so far: 12300.231839
Subtract 5823 from 5990 to get 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Advancing to step 14:
647 goes into 1670 2 times with a remainder of 376.
Record the quotient 2 as the next digit in the result. 
Result so far: 12300.2318392
If we subtract 1294 from 1670, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

On to step 15:
If we divide 3760 by 647, we get 5 and a remainder of 525.
The next digit of our result is 5. 
Result so far: 12300.23183925
Subtracting 3235 from 3760 leaves us with 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

In conclusion, the division gives 12300.23183925 with a balance of 5.25e-07.