38643861 divided by 7 
We want to figure out the number of times 38643861 can be divided by 7.

Going ahead to step 1:
7 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 7

Step 2:
The number 7 fits into 38 5 times, leaving a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 35 from 38 and we're left with 3.
Take the next digit (6) from the dividend and append it to 3, then repeat: 36 / 7

Going ahead to step 3:
36 divided by 7 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we subtract 35 from 36, we get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 7

On to step 4:
When dividing 14 by 7, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 552.0
Subtract 14 from 14 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 7

On to step 5:
The number 7 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 5520.0
Subtract 0 from 3 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 7

Advancing to step 6:
38 divided by 7 is 5 with a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 55205.0
If we subtract 35 from 38, we get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 7

Advancing to step 7:
7 goes into 36 5 times with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 552055.0
If we subtract 35 from 36, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 7

Going ahead to step 8:
11 divided by 7 is 1 with a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 5520551.0
Deduct 7 from 11 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 9:
7 can be fit into 40 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 5520551.5
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 10:
7 goes into 50 7 times with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 5520551.57
Subtract 49 from 50 to 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.

Let's proceed to step 11:
If we divide 10 by 7, we get 1 and a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 5520551.571
If we take 7 away from 10, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 12:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 5520551.5714
The remainder is 2 after subtracting 28 from 30.
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 13:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 5520551.57142
If we subtract 14 from 20, 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.

On to step 14:
The number 7 fits into 60 8 times, leaving a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 5520551.571428
Subtracting 56 from 60 leaves us 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 15:
40 divided by 7 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 5520551.5714285
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.

Advancing to step 16:
50 divided by 7 is 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 5520551.57142857
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.

Our division results in 5520551.57142857 with a remaining 1e-09.