We're dividing 79197052 by 639 
Let's see how many times 639 fits into 79197052.

Step 1:
639 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 639

Step 2:
79 divided by 639 is 0 with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Bring next digit (1) of the dividend behind the 79 and repeat the process: 791 / 639

Moving on to step 3:
If we divide 791 by 639, we get 1 and a remainder of 152.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 152 after subtracting 639 from 791.
Include the next digit (9) from the dividend after 152, then repeat: 1529 / 639

Advancing to step 4:
If we divide 1529 by 639, we get 2 and a remainder of 251.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we take 1278 away from 1529, we end up with 251.
Include the next digit (7) from the dividend after 251, then repeat: 2517 / 639

Advancing to step 5:
The number 639 fits into 2517 3 times, leaving a remainder of 600.
Use 3 as the next digit of our solution. 
Result so far: 123.0
If we subtract 1917 from 2517, we get 600.
Grab the next digit (0) from the dividend, add it to 600, then carry on: 6000 / 639

Let's proceed to step 6:
When dividing 6000 by 639, we get 9 with a remainder of 249.
The number 9 becomes the next digit in our result. 
Result so far: 1239.0
If we take 5751 away from 6000, we end up with 249.
Bring next digit (5) of the dividend behind the 249 and repeat the process: 2495 / 639

Going ahead to step 7:
When dividing 2495 by 639, we get 3 with a remainder of 578.
Use 3 as the next digit of our solution. 
Result so far: 12393.0
Deduct 1917 from 2495 and we're left with 578.
Append the next digit (2) from the dividend to 578 and continue with: 5782 / 639

Moving on to step 8:
5782 divided by 639 is 9 with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 123939.0
The remainder is 31 after subtracting 5751 from 5782.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 9:
When dividing 310 by 639, we get 0 with a remainder of 310.
Use 0 as the next digit of our solution. 
Result so far: 123939.0
If we subtract 0 from 310, we get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 10:
The number 639 fits into 3100 4 times, leaving a remainder of 544.
Put 4 as the next digit of the answer. 
Result so far: 123939.04
Subtract 2556 from 3100 to get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Advancing to step 11:
5440 divided by 639 is 8 with a remainder of 328.
The number 8 becomes the next digit in our result. 
Result so far: 123939.048
The remainder is 328 after subtracting 5112 from 5440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Let's proceed to step 12:
639 goes into 3280 5 times with a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 123939.0485
If we take 3195 away from 3280, we end up with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 13:
850 divided by 639 is 1 with a remainder of 211.
Put 1 as the next digit of the answer. 
Result so far: 123939.04851
If we take 639 away from 850, we end up with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Let's proceed to step 14:
639 can be fit into 2110 3 times, resulting in a remainder of 193.
Write down 3 as next digit of the result. 
Result so far: 123939.048513
If we take 1917 away from 2110, we end up with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

On to step 15:
The number 639 fits into 1930 3 times, leaving a remainder of 13.
The next digit of our result is 3. 
Result so far: 123939.0485133
Deduct 1917 from 1930 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.

In conclusion, the division gives 123939.0485133 with a balance of 1.3e-07.