We look at the division of 78013775 by 639 
We want to figure out the number of times 78013775 can be divided by 639.

Going ahead to 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
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 639

Let's proceed to step 2:
639 goes into 78 0 times with a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Bring next digit (0) of the dividend behind the 78 and repeat the process: 780 / 639

Step 3:
780 divided by 639 is 1 with a remainder of 141.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 639 from 780 to get 141.
Take the next digit (1) from the dividend and append it to 141, then repeat: 1411 / 639

Let's proceed to step 4:
If we divide 1411 by 639, we get 2 and a remainder of 133.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 1278 from 1411 to get 133.
Include the next digit (3) from the dividend after 133, then repeat: 1333 / 639

Moving on to step 5:
639 goes into 1333 2 times with a remainder of 55.
Write down 2 as next digit of the result. 
Result so far: 122.0
If we take 1278 away from 1333, we end up with 55.
Append the next digit (7) from the dividend to 55 and continue with: 557 / 639

Step 6:
If we divide 557 by 639, we get 0 and a remainder of 557.
Write down 0 as next digit of the result. 
Result so far: 1220.0
If we subtract 0 from 557, we get 557.
Take the next digit (7) from the dividend and append it to 557, then repeat: 5577 / 639

Advancing to step 7:
When dividing 5577 by 639, we get 8 with a remainder of 465.
The next digit of our result is 8. 
Result so far: 12208.0
If we subtract 5112 from 5577, we get 465.
Fetch the next digit (5) from the dividend, attach it to 465 and continue: 4655 / 639

Moving on to step 8:
When dividing 4655 by 639, we get 7 with a remainder of 182.
The number 7 becomes the next digit in our result. 
Result so far: 122087.0
Deduct 4473 from 4655 and we're left with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Moving on to step 9:
The number 639 fits into 1820 2 times, leaving a remainder of 542.
Write down 2 as next digit of the result. 
Result so far: 122087.2
Subtract 1278 from 1820 to get 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

Moving on to step 10:
639 goes into 5420 8 times with a remainder of 308.
Record the quotient 8 as the next digit in the result. 
Result so far: 122087.28
Subtracting 5112 from 5420 leaves us with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 11:
The number 639 fits into 3080 4 times, leaving a remainder of 524.
The next digit of our result is 4. 
Result so far: 122087.284
Subtract 2556 from 3080 to get 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

Going ahead to step 12:
639 can be fit into 5240 8 times, resulting in a remainder of 128.
Record the quotient 8 as the next digit in the result. 
Result so far: 122087.2848
The remainder is 128 after subtracting 5112 from 5240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 13:
1280 divided by 639 is 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 122087.28482
Subtract 1278 from 1280 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
If we divide 20 by 639, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 122087.28482
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 15:
639 goes into 200 0 times with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 122087.28482
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 122087.28482 with a remaining 2e-06.