We divide 63936123 by 7
We want to figure out the number of times 63936123 can be divided by 7.

On to step 1:
7 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 7

Going ahead to step 2:
7 goes into 63 9 times with a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 63 from 63 to get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 7

On to step 3:
7 can be fit into 9 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 91.0
If we subtract 7 from 9, we get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 7

Let's proceed to step 4:
The number 7 fits into 23 3 times, leaving a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 913.0
The remainder is 2 after subtracting 21 from 23.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 7

On to step 5:
7 goes into 26 3 times with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 9133.0
If we take 21 away from 26, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 7

Going ahead to step 6:
7 can be fit into 51 7 times, resulting in a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 91337.0
The remainder is 2 after subtracting 49 from 51.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 7

Step 7:
7 can be fit into 22 3 times, resulting in a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 913373.0
The remainder is 1 after subtracting 21 from 22.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 7

Moving on to step 8:
7 can be fit into 13 1 times, resulting in a remainder of 6.
The next digit of our result is 1. 
Result so far: 9133731.0
If we subtract 7 from 13, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
60 divided by 7 is 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 9133731.8
Deduct 56 from 60 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
If we divide 40 by 7, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 9133731.85
If we take 35 away from 40, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
50 divided by 7 is 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 9133731.857
If we subtract 49 from 50, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 12:
7 can be fit into 10 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 9133731.8571
Subtract 7 from 10 to get 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 13:
When dividing 30 by 7, we get 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 9133731.85714
If we subtract 28 from 30, we 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.

Step 14:
When dividing 20 by 7, we get 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 9133731.857142
If we take 14 away from 20, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 15:
7 can be fit into 60 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 9133731.8571428
Deduct 56 from 60 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 16:
40 divided by 7 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 9133731.85714285
Subtract 35 from 40 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 9133731.85714285, with a leftover of 5e-09.